science

Popular questions
  1. Science

    Which items are TRUE about minerals? Select three correct answers. A. rocks are the components that make up minerals. B. minerals are made of one element or one compound of elements. C. observing one property is often the best way to identify minerals. D.

    asked by Redacted. on September 9, 2019
  2. science

    the current atomic model would be revised if 1)better microscopes were being used to study its structure. 2)better microscopes are invented in the future. 3)new information about an atoms structure is discovered.*** 4) a new element is discovered in the

    asked by alainaforysthe on October 9, 2017
  3. Science

    1-Which of the following is not a function of the circulatory system? D-fights infection 2-Which of the following explains why the heart is organized so that it pumps blood to two different locations? D-to provide a way for blood to pick up nutrients at

    asked by Rodco on March 20, 2014
  4. Science

    1) Which of the following is a chemical change? (1 point) Boiling of water Melting a cube of ice Dissolving 10 grams of salt in water Splitting water into hydrogen and oxygen*** 2) What is the mass of water that results from combining 2.0g of hydrogen with

    asked by Skylar on January 28, 2015
  5. science

    1. The skeletal system is created to ____________ internal organs. A) protect

    asked by Anonymous on January 6, 2016
  6. Science

    Which of the following electromagnetic waves is not used for communication?

    asked by Claire on November 23, 2014
  7. Science

    1) Which of the following is true about photosynthesis? A. It is an exothermic reaction B.It is a endothermic reaction ***** C.It produces carbon dioxide D. It occurs in animals 2) Atomic Theory is A.Subject to change if new information is discovered B.A

    asked by noname on November 11, 2015
  8. Science

    1.)Check My Answers, please? Which of the following planets is considered a rocky, or terrestrial, planet? A.)Venus **** B.)Neptune C.)Saturn D.)Uranus 2.)Which of the following statements about the beginning of the solar system is true? A.)The planets

    asked by YRN DJ on January 20, 2016
  9. Science

    A student mixed two clear liquids together in a beaker and a solid precipitate formed. His data is shown in the table below. Liquid reactant A = 10 g Liquid reactant B = 17 g Beaker + solid product= 32 g What is the mass of the beaker? A. 5 g B. 10 g C. 15

    asked by Callie on November 6, 2014
  10. Science

    A dog is trained to sit and shake hands. These traits are most likely A. Inherited B. Not inheited C. Not aquried D. Innate Is the answer B?

    asked by Anonymous on October 15, 2014
  11. science

    water condenses onto the grass in the early morning when the air is clear because? A the air near the ground is warmer than the ground B the air near the ground cools to its dew point( I think this is the answer) C the relative humidity decreases D the

    asked by Helpme i d not know these questions on February 12, 2018
  12. Science

    What is the main difference between mechanical and electromagnetic waves? A. Mechanical weaves involved transfers energy; electromagnetic waves do not B. Mechanical waves require a medium to travel in; electromagnetic waves do not***** C. mechanical waves

    asked by I need help on March 13, 2017
  13. Science

    Which layer of the suns atmosphere are you looking at when you look at an image of the sun?

    asked by HereToTalk on October 10, 2018
  14. Science

    1. How does groundwater cause erosion and deposition? a. When acidic water soaks into the ground, water dissolves limestone, resulting in the formation of caves. *** b. When a river overflows, it moves downhill, resulting in the formation of caves. c. When

    asked by Hannah on March 3, 2014
  15. science

    which of the following is the best course of action when it comes to using natural resources

    asked by jose on November 7, 2013
  16. science

    a weatherman reports, "the storm waves are about 2 meters high and about 35 meters apart." what properties of waves is the reporter describing

    asked by Anonymous on May 9, 2017
  17. Science

    1. How do scientists classify small objects in the solar system? by size by shape by size, shape, and temperature by size, shape, and composition** 2.Which of the following categories of small bodies in the solar system does Ceres belong to? dwarf

    asked by lifeisgreat on May 11, 2016
  18. Science

    1. How Ian an areas topography determined? A. By using an areas longitude and latitude B. By using an areas scale C. By using an areas elevation, relief, and landforms * D. By using an areas elevation, longitude and latitude I really need to check my

    asked by Malie on May 19, 2017
  19. Science

    What wave property is labeled X? a. Frequency b. amplitude c. wavelength d. wave speed Is it C? Thank you!

    asked by Jane Doe on March 10, 2016
  20. Science

    Which of the following explains why a bone in a bird’s wing is homologous to a bone in a lizard’s front leg? a.The bones in the two species provide for the same type of motion. b.The bones in the two species are both vestigial structures. c.The two

    asked by Anonymous on November 10, 2013
  21. SCIENCE

    Which of the following activities has a negative impact on biodiversity? a.)Regulating hunting b.)Establishing wildlife preserves c.)Buying a fuel-efficient car d.)Cutting down trees in rain forests to build more houses.

    asked by Anonymous on January 10, 2014
  22. Science

    1. granite lasts a long time when it is used for building in areas where

    asked by Help12 on March 3, 2017
  23. Science

    The diver has the least gravitational potential energy at position A-1 B-2 C-3 D-4

    asked by Anonymous on February 14, 2018
  24. Science

    Which of the following is true about the magnetic field diagram below. Its shows 3 Arrows on top pointing to B A B 3 Arrows on bottom pointing to B A A is the south pole and B is the north pole B A is the north pole and B is the south pole C A and B are

    asked by BUBBLES on February 19, 2015
  25. Science

    How does DNA determine a trait such as eye color? A. DNA codes for proteins that determine eye color. B. DNA code for mRNA that detemines eye color. C. DNA interacts with proteins to control eye color. D. DNA contains pigments which make up eye color. Is

    asked by Anonymous on October 8, 2014
  26. science

    The modern atomic model includes electrons orbiting the nucleus. Which of the following parts of Dalton's atomic model was disproved by the discovery of the electron? - Atoms are tiny particles. - Atoms cannot be divided into smaller parts . - Atoms have

    asked by julia on September 23, 2015
  27. science

    An advantage of using an electromagnet, shown on the crane in the image below, instead of a regular magnet to move cars in a junkyard is that an electromagnet can easily be turned on and off.

    asked by new moon on May 2, 2018
  28. Science

    1. how do scientists classify stars ? (1point ) A. by size , distance , and color b. by size , distance, and brightness c. by color , brightness, and distance d. by size , brightness, and temperature

    asked by Shalee on October 21, 2015
  29. Science

    1. Which of the following is true about mixtures? (1 point) Mixtures consist of two or more substances chemically combined. Mixtures cannot be separated by physical means. Mixtures consist of only one kind of atom. ***Mixtures have two or more substances

    asked by TTR+S<3 on January 29, 2014
  30. Science

    Which of the following sets of words can be used to describe the outputs of photosynthesis? water, glucose, light energy carbon dioxide, glucose, chemical energy oxygen, glucose, chemical energy glucose, oxygen, light energy Which of the following is true

    asked by Anonymous on February 6, 2014
  31. Science

    True / False: If a 40 kg person is accelerating at 10 m/s^2,then the magnitude of the force acting on him or her is 400 N. 1.How much force is needed to make a 60 kg object accelerate at a rate or 2.0 m/s ^2? 2.What is the acceleration of a 30 kg objedct

    asked by Makayla<3 on January 27, 2015
  32. Science

    1. Which climate is warm, wet, and located on the edges of the tropics? A. temperate marine B. highlands C. temperate continental D. polar 2. Which statement best explains why tropical climates are so hot? A. They receive little rain B. They receive more

    asked by Kpop is real on March 17, 2016
  33. science

    check answers 1. A box of cleaning supplies weighs 15n.if the box is lifted a distance of 0.60m,how much work is done? A. 0.040 j B.9 j C.14 j (I PICK THIS) D.25 j 2.to chop wood you apply 50.0n of force to an ax. The ax applies 600.0n of force to the

    asked by Matt on January 16, 2014
  34. Science

    The Periodic Table 1) What conclusions can be drawn about the relationship between the arrangement of elements on the periodic table and the patterns observed in their properties? :Properties of elements are related to atomic numbers.*** :Properties of

    asked by TheLOUDEST_0430 on March 9, 2015
  35. Science

    Hormones and Homeostasis 1) The human endocrine system is made up of which of the following structures? :Vessels. :Receptors. :Glands.*** :Chambers. 2. Which of the following best describes the function of the endocrine system? :It secretes chemical

    asked by TheLOUDEST_0430 on February 27, 2015
  36. science

    Which of the following would be true for the charged particles below ?

    asked by kayli on October 15, 2015
  37. science

    1. Which statement is true about the following molecule? (1 point)The molecule is composed of four atoms.The molecule contains oxygen atoms.The molecule is water.The molecule represents an element. 2. A(n) _____________ is made up of two or more different

    asked by cIATA on February 27, 2014
  38. science

    1.)a basketball momentarily changes shapes as it bounces off the floor. this is due to balanced forces acting on the ball. True (answer) false 2.) a ball slowing down as it roles across the carpet is an example of what ? (1 point) a.)balanced force

    asked by Hannah Marie on October 8, 2014
  39. Science

    How do microorganisms affect the quality of soil? A. By breaking down the remains of dead organisms B. By creating tunnels C. By absorbing water D. By increasing mechanical weathering

    asked by brookieluvs on November 9, 2015
  40. science

    1) a pea plant with yellow seeds is crossed with a pea plant with green seeds. all of the offsprings have yellow seeds. the allele for yellow sees is a. Dominate because all offspring have yellow seeds. b. Recessive because all of the offsprings have

    asked by dani on October 21, 2014
  41. Science

    1. The streams and smaller rivers that feed into a main river are its A. watersheds B. tributaries** C. divides D. reservoirs 2. How are seamounts like the Rockies? A. Both are forms of mountains** B. Both are made of the same kind of rock C. Both are

    asked by McKayla on March 9, 2016
  42. Science

    Which of the following describes how matter moves between producers, consumers, and decomposers in an ecosystem? one-way flow from producers to consumers to decomposers one-way flow from decomposers to consumers to producer cyclic flow froms producers to

    asked by Anonymous on February 11, 2014
  43. Science

    1. Which type of weather technology often carries cameras that can make images of Earth's surface, clouds, and snow cover? A. weather balloon B. weather satellite**** C. computer D. automated weather station 2. Why are weather forecasts more reliable now

    asked by Bob on March 19, 2015
  44. Science

    At which position does the diver have the most gravitational potential energy? A.) 1 ( in diving board about to jump off, in a squatting position with hands above head) B.) 2 (In air, just after jumping off. Hands above head) C.) 3 ( About to head into the

    asked by Alice on December 11, 2018
  45. Science

    1. The line on the graph below represents an object that is: A: Moving at a constant speed B: Increasing its speed C: Decreasing it's speed D: Not moving at all 2. To determine the acceleration of an object moving in a straight line, you must calculate the

    asked by Reeces on February 23, 2017
  46. Science

    The sky is mostly blue, with some high, thin, feathery clouds. Which type of weather is most likely to occur? A. Light drizzle,**** B. Heavy precipitation, C. fair weather D. thunderstorm I say A. because the sky is mostly blue.

    asked by Howie on May 7, 2016
  47. Science

    I'm kinda in a rush but take your time!Thx! 1.What was Henri Becquerel studying when he accidentally discovered radioactivity? A.photography B.properties of black light C.properties of X-rays D.solar energy 2.When Marie Curie isolated uranium from

    asked by I am awesome on January 6, 2015
  48. Science

    What would happen to an object if the force of gravity on earth was decreased by half A. It’s mass would decrease B. It’s weight would decrease**** C. It’s density would decrease D. It’s volume would decrease

    asked by A person on December 11, 2017
  49. Science

    Why do scientists use models? a: Scientists use models to learn about things that are too small, too large, or too complex to observe directly. < b:Scientists use models because doing so is always part of the scientific method. c:Scientists use models

    asked by not+really on September 28, 2017
  50. Science

    Can someone please check my answers? I would greatly appreciate it. Thanks! 1. Which of the following inner planets has virtually no atmosphere? a. Mercury*** b. Venus c. Mars d. Earth 2. Which of the following statements about the inner planets is true?

    asked by Blair on February 18, 2016
  51. Science

    The geologic time scale originally ordered Earth's rocks by: A. absolute age B. relative age*** C. composition D. decades and centuries Where did scientists originally get their information to develop the geologic time scale? A. They collected and studied

    asked by Anonymous on November 12, 2015
  52. Science

    What does the notation TT mean to geneticists? A. Two dominant alleles B. Heterozygous C. At least one dominant allele D. One dominant and one recessive allele Is the answer A?

    asked by Anonymous on October 10, 2014
  53. science

    What do the bone marrow and the epidermis have in commen

    asked by gabriella on April 4, 2017
  54. Science

    How does altitude affect climate? The higher the altitude, the colder the climate will be. (MY ANSWER) The lower the altitude, the older the climate will be. The higher the altitude, the hotter the climate will be. Altitude is not related to climate.

    asked by LOVE on January 29, 2016
  55. science

    1. How is the equator similar to the prime meridian? (1 point) Both the equator and prime meridian are lines that divide Earth into the Northern and Southern hemispheres. Both the equator and the prime meridian are imaginary base lines from which locations

    asked by TTR+S<3 on May 15, 2014
  56. Science

    1. White skin (W) is dominant over yellow skin (w) in chickens. Which of the following genotypes would result in a white-skinned chicken that could possibly have yellow-skinned offspring? A. WW B. Ww** C. ww 2. Which of the following describes the genotype

    asked by Mimmi on October 7, 2015
  57. Science

    Which of the following best explains why it is necessary for the body to eliminate waste?

    asked by Caitie Cat on October 17, 2014
  58. Science

    1. Which of the following types of waste should not be recycled at home? a. expired medicines b. glass bottles c. papers d. plastic bags 2. Which of the following is NOT a method of disposing hazardous wastes? a. burying them in deep rock layers b.

    asked by Calvin on May 19, 2014
  59. Science

    Which of the following Best describes the movement of an object at rest if no outside forces act on it. It will move due to inertia. Gravity will eventually cause it to move. It will stay at rest due to inertia~~~~~~~ It will stay at rest due to gravity.

    asked by Young on May 21, 2018
  60. Science

    1. Which statement best describes the relationship between science and technology? >>A. The goal of science is to gain an understanding of the natural world, while the goal of technology is to use that understanding to improve people's lives.

    asked by Ahxello on September 12, 2017
  61. Science

    #1. Kilometers per hour describes the speed of an object. ture false **** #2. Which of the following reference points would allow you to observe the speed of a car that you are traveling in? a) an airplane flying across the sky b) a car traveling next to

    asked by Mindy on February 27, 2014
  62. Science

    Darwin assumed that evolutionary change was always slow and gradual. What was the first evidence that suggested evolutionary change might happen fast sometimes? a. homologous structures b. fossils c. reproduction rates d. DNA sequences Which of the

    asked by Anonymous on November 14, 2013
  63. Science

    1. An organism's particular role in its habitat, or when and how it survives, is called its A. Carrying capacity B. Ecosystem C. Competition D. Niche*** 2. Which of the following is an example of a predator adaption? A. A lion's pheromones B. A shark

    asked by Embershy on November 11, 2016
  64. Science

    Which of the following sets of terms could be used in a description of the peripheral nervous system? 1)motor neurons 2)brain and spinal cord 3)motor neurons 4)sensory neurons and spinal cord I think #1. Can you check? Thanks.

    asked by Jamie on December 6, 2017
  65. science

    when that air under the envelope is heated , the balloon lifts . which of the following statement is true A. hot air balloons use radiation to rise B. hot air balloons use conduction to rise C. hot air balloons use convection to rise D. hot air balloons

    asked by Madison on December 16, 2018
  66. science

    Which combination of sex chromosomes results in a male human being? 1 XX 2 YY 3 XY 4 either XX or YY is it a?

    asked by Devyn on October 31, 2017
  67. Science

    1. Which of the following traits is acquired A. the number of petals that grow in a plant's flowers B. the wing shape of a wild bird C. the ability of some gorillas to use sign language D. a cheetah's ability to run faster than any other animal 2. The

    asked by homework help on December 13, 2013
  68. science

    1. Under which of the following conditions would a fossil most likely form? (1point) a. A living thing dies and sediment is very slowly deposited on top of i’s body. b. A living thing dies and sediment quickly covers its body.

    asked by Duece on December 5, 2017
  69. science

    1. The image above shows the Andes Mountains. Which of the following processes formed this feature? (1 point) (pic of Andes Mountains) Glaciers deposited sediment. Plates converged together to form the mountains. Plates pulled apart and released magma.

    asked by TTR+S<3 on April 24, 2014
  70. Science

    Lesson 4: Behavior Science 7 B Unit 2: Interdependent Relationships in Ecosystems 1. Which type of behavior is illustrated in the following series of images? 2. Which of the following helps ensure a groups access to resources it needs for survival? 3.

    asked by Pizza on March 15, 2018
  71. Science

    Which of the following gases was most likely present in Earth's earliest atmosphere? A. Nitrogen B. Hydrogen** C. Argon D. Oxygen

    asked by Ace on December 10, 2018
  72. Science

    1. Which of the following is an example of matter? (1 point) leaves shadows light from the sun sound 2. Which of the following is an example of a chemical property of matter? (1 point) ability to melt ability to freeze ability to react ability to break 3.

    asked by Jenna on February 26, 2014
  73. Science

    Which of the following could be true of two different species that have a competitive relationship in the same ecosystem? A: one species preys on the other B:they share the same niche C:one species benefits while the other is neither helped or harmed

    asked by Evie on December 14, 2016
  74. Science

    Heat and pressure deep beneath the Earths surface can change any rock into A) chemical rock B) gemstone C) metamorphic rock D) sedimentary rock

    asked by Zack on February 15, 2017
  75. Science

    One light bulb in a string of lights goes out this causes all other lights in string to go out. This is example of A. Resistor B. parallel circuit C. Closed circuit***** D. Series circuit When a switch is turned from the off to the on position it is

    asked by BUBBLES on March 1, 2015
  76. Science

    1.) when might preserved remains of an entire organism form? A.) when sediment buries the hard part of an organism B.) when an event such as a quick burial or freezing preserves an entire organism ******* C.) when minerals replace parts of an organism D.)

    asked by Zach on February 29, 2016
  77. Science

    _________ is a solid fossil fuel that forms from plant remains. A. Coal B. Hydrocarbon C. Natural gas D. Petroleum

    asked by Anonymous on December 12, 2018
  78. Science

    1. One of the ways humans can preserve biodiversity is (blank). A. habitat destruction B. habitat preservation C. habitat fragmentation D. poaching

    asked by loli on June 13, 2018
  79. Science

    1.)Why is Earth’s temperature just right for life? (1 point) A.)Earth’s core is hot enough to heat Earth’s surface. B.)Earth’s magnetic field creates suitable temperatures on Earth’s surface. C.)Earth’s crust is warmed by heat from the sun.

    asked by YRN DJ on December 7, 2015
  80. science

    A ball of mass 1 kg dropped from 9.8m height , strikes the ground and rebounds to a height of 4.9m .If the time of contact between ball and ground is 0.1s,then find impulse and average force acting on ball.

    asked by Kundan on September 10, 2017
  81. Science

    What do bone marrow and epidermis have in common. A.they are both sites of new cell information B.they both contain structures that assist the body in cooling down if overheating occurs. C.they both contain or are associated with sensory neorons D.they are

    asked by Anonymous on December 15, 2016
  82. science

    a ball is thrown straight upward and returns to the thrower's hand after 3.00s in the air. A second ball is thrown at an angle of 30.0 deg with the horizontal. At what speed must the second ball be thrown so that it reached the same height as the one

    asked by tani on September 8, 2009
  83. science

    which of the following could be true of two different species that have a competitive relationship in the same ecosystem? A.one species preys on the other B.they relationship is mutually beneficial C.they share the same niche D.one species benefits, while

    asked by Aaron on December 13, 2013
  84. Science

    what the difference between the structures of simple and complex

    asked by Alex on September 8, 2013
  85. Science

    Studies conducted in England during the Industrial Revolution have shown that children born to poor families were, on average, shorter than those born to wealthier parents. The most likely explanation for this difference in height is a difference in

    asked by Anonymous on March 24, 2017
  86. science

    if all members of a specie disappears, the species is said to be.. a.)extinct b.)endangered c.)threatened D.)keystone

    asked by gabby on November 23, 2015
  87. Science

    What are 5 key accomplishments of Marie and/ or Pierre Curie?

    asked by jeje on January 21, 2015
  88. science

    which of the following describes an example of land reclamation???????? a b c d

    asked by kid help on March 6, 2019
  89. Science

    How do layers B and D compare in age? If rock layers between B and D have eroded away, what is the boundary between B and D called? My answer: Layer D is older than layer B. If rock layers between B and D have eroded away, the boundary between B and D are

    asked by rAnDoM on October 29, 2015
  90. science

    1. Which organisms are capable of converting gaseous nitrogen in the air into a form that other living organisms can use? (1 point) nitrogen-fixing bacteria denitrifying bacteria decomposers producers 2. Which step in the nitrogen cycle is accelerated at

    asked by TTR+S<3 on January 21, 2014
  91. Science

    Your are studying an evergreen tree that produces cones. The tree is an? -Angiosperm -Gymnosperm -Gametophyte -Monocot

    asked by Red- Please Help! on April 10, 2014
  92. Science

    Which of the following could be true of two different species that have a competitive relationship in the same ecosystem? One species preys on the other. The relationship is mutually beneficial. They share the same niche. One species benefits, while the

    asked by Anonymous on April 25, 2017
  93. science

    which term describes the main process in the water cycle

    asked by ginger on February 21, 2016
  94. Science

    Name two types of evidence used to support the theory of evolution. Explain how scientists use each type of evidence to provide support for evolution. Give one example of each. I need 6 sentences please help I still need to finish other classes and I only

    asked by help!! on May 29, 2018
  95. science

    Which direction will the box move in the diagram below? (Its a square in the middle and it has a long arrow pointing to it on the left side which is 5 N and then on the right side theirs a short arrow pointing to it which is 3 N) A. It will move to the

    asked by Amber on January 14, 2016
  96. Science

    Which of the following is a valid reason to study science? A. All employers require an in-depth knowledge of science. B. Carrying out scientific experiments is a requirement of everyday life. C. Most colleges require advanced science classes. D.

    asked by dOg.eXe has stopped working. on August 20, 2018
  97. Science

    1. Which of the following characteristics of the Arctic rabbit is specifically an adaption living in the tundra? A. small size B. keen eyesight C. strong legs D. white fur*** Am I correct?

    asked by No one special on March 8, 2016
  98. science

    A simple model for a person running a 100m race is to assume the sprinter runs with constant acceleration until reaching top speed, and then maintains that speed through the finish line. If a sprinter reaches their top speed of 11.2ms-1 in 2.15s, what will

    asked by Emily on September 4, 2012
  99. Science

    What could the relative age of two rocks tell you about them? a. One rock is 10,000 years old, and the other is 8,000 years old. b. One rock is older than the other. c. They both have fossils in them. d. One rock is closer to the surface than the other.

    asked by Anonymous on October 8, 2013
  100. science

    1.)Which of the following identifies a measurement its si unit, and the tool most commonly used to measure it ? A.)length,meter,ruler B.)temperature, degrees Fahrenheit, thermometer C.)Weight, gram , scale D.)volume, millimeter, meniscus

    asked by cheyann on September 15, 2015