Friday
April 29, 2016

Homework Help: Science

Branches of Science

Recent Science Questions

science
What advantage would a backbone give to an animal that lives underwater? Thank you
Wednesday, October 7, 2015 by nads

Science
Which letter arrows point to hanging valleys? Which letter arrows point to aretes? Name a peak on the map that is a horn. Feature E on the map is composed of glacial till. What type of glacial feature is E, and how did it form? Explain how turquoise lake formed? file:///C:/...
Wednesday, October 7, 2015 by Maya

science
Which of the following explains the relationship between genes and chromosomes. a) Chromosomes come in diffrent versions called genes. b) genes come in diffrent structures called chromosomes. c) Chromosomes are structures that are made up of two versions called genes. d) genes...
Wednesday, October 7, 2015 by jirehn bush

Science
Ms. Sue PLEASE check my answers! 1. Which of the following is not part of the theory of evolution? a. Organisms tend to produce more offspring than can survive to reproductive age. b. Organisms can acquire changes during their lifetime that can help their species survive. c. ...
Wednesday, October 7, 2015 by Blair

Science
What cannot be separated into simpler substances by physical or mechanical methods such as filtering boiling or shifting
Wednesday, October 7, 2015 by Myla

Science
1.)Ovaries contain A.)Sperms & produce estrogen B.) Sperms & produce testosterone C.)Eggs & produce estrogen D.)Eggs & produce testosterone 2.)The testes produce A.)Sperm & estrogen B.)Sperm & testosterone C.)Eggs & estrogen D.)Eggs & testosterone 3.)After an egg is fertilized...
Wednesday, October 7, 2015 by Douglas

Science
which of the following features make earth and venus similar to each other ? (1point ) A . their size and mass b. their rates of rotation c. their atmospheres d. their directions of rotation****
Wednesday, October 7, 2015 by Cami

Science
1) Which of the following statements about the sun's structure is true? The sun has a solid surface The sun has an interior and an atmosphere The sun's interior is similar to the Earth's; it has a core, mantle, and crust*** The sun's outermost layer is called ...
Wednesday, October 7, 2015 by Shalee ^~^

Science
The half life of Uranium-238 against alpha decay is 4.5*10^9 years.Calculate the number of disintegrations taking place in 1gm of the substance.
Wednesday, October 7, 2015 by Anju

Science
The half life of radium is 3.82 days.In what time will the activity decay to 1/16 of its original value.
Wednesday, October 7, 2015 by Anju

science
An object moving in a straight line at a constant velocity of 2m/s accelerates at 3m/s2 for 4s . what's the displacement of the object ?
Tuesday, October 6, 2015 by Lehto

Science
1. A pea plant with yellow seeds is crossed with a pea plant with green seeds. All of the offspring have yellow seeds. The allele for yellow seeds is A. dominant because all of the offspring has yellow seeds** B. recessive because all of the offspring has yellow seeds C. ...
Tuesday, October 6, 2015 by Annika

science
one side of a cube of an unknown metal measures 0.53cm. If the mass of the cube is 0.92g, what is the density of the cube?
Tuesday, October 6, 2015 by verna

Science
a(n) ____ occurs during the design process when one benefit is given is given up in order to obtain another thanks
Tuesday, October 6, 2015 by Please help, this is urgent

Science
What were five accomplishments of marie curie?
Tuesday, October 6, 2015 by Ryan

Science
I have several questions 4: The image above shows particles in a medium. Which of the following shows the best conditions for a sound wave to travel? a, b, c, d----My answer is C 12. Which letter shows the type of wave that can be seen by the human eye? a. b. c. d----my answer...
Tuesday, October 6, 2015 by Roover

science
Suppose a scientist found a new fossil that indicated it was a primitive mammal. Relative dating techniques place the age of this fossil at a much earlier time than mammals were thought to exist. What effect will this finding have on understanding of the history of life? a. ...
Tuesday, October 6, 2015 by kayla pkz help

Science
1.)The sporophyte generation produces spores that grow into a A.)Gametophyte B.)Gymnosperm C.)Angiosperm D.)Pupa 2.)Placental mammals develop A.)In leg an egg laid in water B.)In a pouch on the mother's body C.)Inside the mother's body D.)Inside an amniotic egg 3.)...
Tuesday, October 6, 2015 by Douglas

Science
Why do scientists use models of natural systems? (1 point) Scientists use models of natural systems because these systems are often too large, too small, or too complex to study directly**** Scientists use models of natural systems because they like to use art in science. ...
Tuesday, October 6, 2015 by Shalee ^~^

Science
How to high-tides change? How do Low-tides change? I would figure it would be the moon and sun, but I want other people's answers. (I thank all who answer)
Tuesday, October 6, 2015 by Shi Buringa

science
1. which of the following must occur for speciation to take place? a. a population must be physically separated into groups b. harsh environmental conditions must be imposed on a population c. competition must occur between members of a populations d. some event must occur ...
Tuesday, October 6, 2015 by kayla help plzz

science
A dolphin swimming in seawater at a temperature of 25degree Celsius emits a sound directed toward the bottom of the ocean 150 meters below. what period of time passes befor it hears an echo?
Tuesday, October 6, 2015 by ivangio

Science
What two words do these letters spell that relates to laboratory work? aaeerrdddugictlysn
Monday, October 5, 2015 by Kathy

science (BIO)
Assume that two pigments, red and blue, mix to give the normal purple color of petunia petal. Separate biochemical pathways synthesize the two pigments, as shown in the top two rows of the accompanying diagram. "White" refers to compounds that are not pigments. (...
Monday, October 5, 2015 by maxx hotton

science
will a 19.2 bock float in water? i need help please!
Monday, October 5, 2015 by KP

Science
A gene is to a chromosome as.... a) a pea is to a pod b) a front is to a back c) a bike is to a car d) a building is to a window
Monday, October 5, 2015 by Taryn Hughey

Science
1.)Seahorse change color & swim together in predetermined ways before mating. these behaviors are called? A.)Asexual reproduction B.)Sexual Reproduction C.)Courtship Rituals D.)Budding 2.)A male peacock displays his colorful tail feathers in order to A.)Increase the success ...
Monday, October 5, 2015 by Tom Brady Jr

science
1. which of the following must occur for speciation to take place? a. a population must be physically separated into groups b. harsh environmental conditions must be imposed on a population c. competition must occur between members of a populations d. some event must occur ...
Monday, October 5, 2015 by kayla help plzz

Science
What is the difference between isobars and isotherm?? Thanks!!
Monday, October 5, 2015 by Addie

Math in Science
Estimate the thickness of plant matter that produced a bed of coal 0.6 m thick. About how much coal would have been produced from a layer of plant matter 0.50 m thick.
Monday, October 5, 2015 by Zoe

science
WHAT MEASUREMENTS BEST DESCRIBES THE RESULTS OF A SCIENTIFIC EXPERIMENT REGARDING DISTANCE?
Monday, October 5, 2015 by shante

science
1. which of the following is not part of theory of evolution. a. organisms end to produce more offspring than can survive to reproductive age. b. organisms can acquire changes during their lifetime.*** c. organisms that do not survive to reproduce do not pass on their traits d...
Monday, October 5, 2015 by kayla

Science
Which of the following differswhen comparing the deep ocean to the interdial a.need of energy b.salinity c.the amount of sunlight d.reliance on phytoplankton
Monday, October 5, 2015 by Kaleb

science
1.a population of snails on an island is disrupted during a violent storm. portions of the population are carried by the storm surge to two new islands, while a portion remains on the original island creating three separate populations. conditions on one of the new island are ...
Monday, October 5, 2015 by kayla(sciences) plz help

Science
What is the 5% rule for y-intercepts?
Monday, October 5, 2015 by Gwenyth

science
which of the following characteristics would you look for a piece of sandstone
Monday, October 5, 2015 by Crtine

Science
1. Which component of the technological system is achieved when an automobile airbag inflates? A. Input B. feedback C. process D. output I think the answer is D. Output. Possibly C. Process. Please help. It will be greatly appreciated. Thank you for your time!!!
Sunday, October 4, 2015 by BabyCakes101

Science
1. Why do scientists use models of natural systems? (1 point) Scientists use models of natural systems because these systems are often too large, too small, or too complex to study directly. Scientists use models of natural systems because they like to use art in science. ...
Sunday, October 4, 2015 by Shalee ^~^

science
Two converging lenses are separated by 50 cm, and have focal lengths of f1 = 20 cm and f2 = 10 cm, as illustrated in Figure 2. An object is placed on the left of Lens 1. The final image formed by the two lenses is located at 26.0 cm to the right of Lens 1. (a) Determine the ...
Sunday, October 4, 2015 by Anonymous

Science
CaCo3 _____ CaO+CO 2 From this eqn caculate the amount of Carbon dioxide in grams liberated by heating 25g of calcium carbonate ?
Sunday, October 4, 2015 by Amaresh S Patil

Eligugu high school science
5 kg of steel is immersed in water at 2 degrees Celsius. what mass of water is required if the final temperature is 40 degrees Celsius?
Sunday, October 4, 2015 by Mandla

Eligugu high school physical science
A cannon with a mass of 10 tons fires a bullet horizontally with a mass of 50kg. The velocity of the bullet when it leaves the barrel of the cannon is 800 m / s. calculate the recoil velocity of the cannon.
Sunday, October 4, 2015 by Mandla

Tourism Life Science History Maths Literacy
I'm doing this subject but in the mean time I want to go to Collage and right now I don't know what to choose time is running out becouse I'm in Grade Eleven
Saturday, October 3, 2015 by Thando

science
How to cal. The range of π+arcsin(3x-4x^3).give the whole solution step wise
Saturday, October 3, 2015 by RALLZO

science
calculate the ratio of momentrum when (a) velocity of an object is doubled (b) mass of an object is halved (c) both mass and velocity are increased by three times
Saturday, October 3, 2015 by shehzad

science
23g of salt is dissolved in 100g of water at 23 k. what is the concentrarion of solution at this temperarure.
Saturday, October 3, 2015 by shehzad

science
to find the height of a bridge over a river. a stone is dropped freely in the river from the bridge.the stone takes 2s to touch the water surface of the river. calculate the height of the bridge from the water surface (g=9.8 m/s
Saturday, October 3, 2015 by shehzad

science
why does (second ) square occurs in the unit of acceleration
Saturday, October 3, 2015 by shehzad

science
what is the mometum of a mass 75 kg when he moves with a velocity of 2m/s
Saturday, October 3, 2015 by shehzad

science
combination of which two tissue. is responcible for movement in humans
Saturday, October 3, 2015 by shehzad

Science
If 5gm KClO3 is decomposed to form KCl and O2. What is the percentage yield of reaction if 1.25 gm of O2 is produced??
Saturday, October 3, 2015 by Soumoyjit

Science
I need some help, this is fairly confusing to me. ______ Allows traits favorable for survival to be passed from parents to offspring. I could not find the answer to this in my textbook, any help?
Saturday, October 3, 2015 by Bluue

physical science
Approximately how long would it take a radio signal to reach the International Space Station (ISS) at an orbital altitude of 350km?
Friday, October 2, 2015 by zina

science
What would you estimate to be the speed of a galaxy located 60 million light-years away?
Friday, October 2, 2015 by whitney

Science
Connexusacadamy unit test. identify the choice that best completes the statement or answers the question. 1.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 ...
Friday, October 2, 2015 by eve

Agriculture,life science,maths literacy,geography
After finishing matric ,will i qualify to be lawyer,geologist,IT,police or teacher?
Friday, October 2, 2015 by Karabo

science
A rope is stretched between two boats at rest. A sailor in the first boat pulls the rope with a constant force of 100 N. First boat with the sailor has a mass of 250 kg whereas the mass of second boat is double of this mass. If the initial distance between the boats was 30 m, ...
Friday, October 2, 2015 by Bhavya

Physical science
Help tires rated for 60,000 miles and tread depth of 3/8" Hoe do I estimate how much tread is worn off for every mile driven?
Thursday, October 1, 2015 by Madison

Science
According to the law of conservation of mass, what should the product side of this single replacement reaction look like ? A. H2 ZnCl2 B. H2 + Zn + Cl2 C. H2 + ZnCl2 D. Zncl2
Thursday, October 1, 2015 by LoveMuffin

Science
How do binomial or 2 part names compare with early versions of scientific names? shorter longer descriptive in English my answer is descriptive
Wednesday, September 30, 2015 by Steve

Science
What is the total displacement of two trips one 10km north and the other 24km east
Wednesday, September 30, 2015 by Jack

Science
The relative age of a rock is ? 1. its age based on how much carbon-14 it contains 2. its age compared with the ages of other rocks 3. less than the age of the fossils it contains 4. the number of years since it formed my answer is D
Wednesday, September 30, 2015 by China one

Science
which of the following is an example of a chemical change? A)Iron changes when heated B)Gas bubbles form in boiling water C) Balls of wax form when melted wax is poured into ice water. D)A gas forms when vinegar and baking soda are mixed My Choice D
Wednesday, September 30, 2015 by Appreciated Help

Science
I am writing a mock biotechnology research proposal for class and I don't know what I should make this research plan about. What are some of the most breaking scientific news, or diseases and issues in this field(biology preferred, or chemistry) that are currently having ...
Wednesday, September 30, 2015 by Betty

Math,Science,Algebra,Geography
Beryl Really Likes taking care of all the details needed to finish up a project. Her Belbin Team Role is? A.)Computers/Finisher B.)Resource/Investigate C.)Sharper D.)Plant
Wednesday, September 30, 2015 by DJ

science
1.the modern atomic model includes orbiting the nucleus. which of the following parts of dalton's was disproved by the discovery of the electron atoms are tiny particles atoms cannot be divided into smaller parts atoms have specific mass and size atoms have specific ...
Wednesday, September 30, 2015 by alex

Math,Science,Algebra,geography
The 3 Letter code that summaries your 3 strongest career types is called your? A.)Holland-Code B.)Myers-Briggs Type C.)Teamwork Profile D.)Beblin Code
Wednesday, September 30, 2015 by DJ

Math,Science,Algebra,Geography
the personality type theory that gives people codes based on their levels of four traits, including sensing-intuition or making of thinking-feeling is called the? A.)Holland Code B.)Myers-briggs C.)Beblin Roles D.)Team Work Profiles
Wednesday, September 30, 2015 by DJ

Science
The spin of an object on its own axis is called
Tuesday, September 29, 2015 by Jonathan

science
What is the rarest element?
Tuesday, September 29, 2015 by Matthew

chemsitry
home / study / questions and answers / science / chemistry / make sure to answer both parts: 1)balance the following ... Your question has been posted. We'll notify you when a Chegg Expert has answered. Post another question. . Question Edit question make sure to answer ...
Tuesday, September 29, 2015 by marcus

ap chemistry
home / study / questions and answers / science / chemistry / balance the following example of a heterogeneous ... Your question has been answered! Rate it below. Let us know if you got a helpful answer. . Question Balance the following example of a heterogeneous equilibrium ...
Tuesday, September 29, 2015 by martika

science
what is the half-life of the nuclide
Tuesday, September 29, 2015 by john

Science please check my answer
Which of the following fossil types is best described as forming when minerals replace all or part of an organism's body? A) A mold B) A petrified fossil*** C) A cast D) A trace fossil
Tuesday, September 29, 2015 by Grace

Science
What has the study of fossils allowed scientists to do? A) Describe the past environments and the history of life. B) Study present ocean temperatures at different depths C) Analyze the chemical compositions of sedimentary rocks and minerals. *** D) Predict which organisms ...
Tuesday, September 29, 2015 by Grace

Science
Please help: Observations can lead to hypotheses. Hypotheses can lead to new experimentation. Which best describes an observation and hypothesis that might lead to new experimentation? A. Dr. Sattler discovers a new plant that grows near underwater volcanoes. She thinks the ...
Tuesday, September 29, 2015 by Izabella

Science 1 question
A researcher, studying dolphins in the wild, made the following sketch. Each dot on the map represents one dolphin. The area surveyed by the scientist was 1 km ^2. Based on the researcher's data, how many dolphins would you estimate to be in a 3 km ^2 area? 3 7 14 21 SORRY...
Tuesday, September 29, 2015 by Noel

Science
Hydrogen gas(H2) and chlorine gas (CL2) react to form hydrocloric acid (HCL). What is the correct balanced chemical equation for this reaction? A-2H2+2CL2->HCL B-H2+CL2->2HCL C-2H2+CL2->2HCL D-H2+CL2->HCL I think C Pls Help me
Tuesday, September 29, 2015 by Jake

science
a satellite in force free space sweeps stationary interplanetary dust at a rate of dM/dt=alpha v, where M is mass and v is speed of satellite and alpha is a constant. the tangential acceleration of satellite
Tuesday, September 29, 2015 by 119

Science
Many stems hold leaves high. Higher leaves are more likely to get sunlight. How is this helpful to a plant? I don't understand
Monday, September 28, 2015 by BUBBY

Physics
I am in 8th Grade G/T Science, and I had a question in an online test I didn't understand: An object is traveling at 8.1 m/s. Over the course of 5.3 seconds, it accelerates at a rate of 2.8 m/s2. What is its final velocity (in m/s)? Can you please help me answer this ...
Monday, September 28, 2015 by Meher

H S Algebra
Kelly made a 94 and an 80 on the first two science tests. What does she need to make on the third test to have at least a 90 average in the class?
Monday, September 28, 2015 by Norman

English
Identify the choice that best describes the word "sometimes" I sometimes read the science section of the Sunday Newspaper. article adjective proper adjective adverb*** *** - My Answer
Monday, September 28, 2015 by Kaai97

English
Identify the choice that best describes the word "strongly" However, when a science article is about something that strongly appeals to me, such as snowflakes, I become interested. article adjective*** proper adjective*** adverb *** - My Answer Not sure whether ...
Monday, September 28, 2015 by Kaai97

English
Identify the choice that best describes the word "reassuring" Although I do not pretend to understand the science behind it, this is reassuring to me. adverb*** adjective article compound adjective *** - My Answer
Monday, September 28, 2015 by Kaai97

Science
Three major branches of earth science: Meteorology Geology Oceanography
Monday, September 28, 2015 by Sue

SCIENCE
which of the following allows a plant's vascular system to work as a transport system? A. a plant's vascular system is made up of specialized cells that move around the plants as it grows. B. a plant's vascular system is made up of specialized cells that are ...
Monday, September 28, 2015 by I NEED HELP FAST!

Science
a gummy bear experiment a solution of hot water and acid is used to see which solute would make the gummy bear dissolve faster. What is the dependent variable? Gummy bear Independent variable: hot water, and acid
Monday, September 28, 2015 by Sue

Science
What are the advantages and disadvantages of Mathematical model - disadvantage: it often cannot account for all possible factors Advantage to a mathematical model is it can be applied to categories of any size and can predict complex events Physical Model - Disadvantage: they ...
Monday, September 28, 2015 by Sue

Science
which pair of terms correctly completes the diagram with (a) before "spores" and (b) after "spores"
Monday, September 28, 2015 by DJ

Science
Angiosperms & Gymnosperms both produce? A.)Flowers B.)Cones C.)Spores D.)Seeds
Monday, September 28, 2015 by DJ

Science
In ferns, the sporophyte produces(1 point) A.)CONES,WHICH GROW INTO A GAMETOPHYTE B.)GAMETES, WHICH GROW INTO A GAMETOPHYTE C.)SPORES, WHICH GROW INTO A GAMETOPHYTE D.)SEEDS, WHICH GROW INTO A GAMETOPHYTE ?
Monday, September 28, 2015 by DJ

Science PLEASE help!
What is the difference between a scientific theory and a scientific law?
Monday, September 28, 2015 by Grace

Science
A student measures a room to be 20.0m*17.16m. Which of the numbers below represents the room's area with the correct number of significant figures? A) 340 meters squared B) 343 meters squared C) 343.2 meters squared D)343.20 meters squared
Monday, September 28, 2015 by Grace

Science
Why do scientists use models of natural science? A) Scientists use models of natural systems because these systems are often too large, too small, or too complex to study directly B) Scientists use models of natural systems because they like to use art in science. C) ...
Monday, September 28, 2015 by Grace

Science
Why is the use of the inquiry process a practical way to approach science? 5 points My Answer: The inquiry process is a practical way to approach science because the inquiry process begins by asking questions and moving on from there. In science it is important to investigate ...
Monday, September 28, 2015 by Simon

Computer science
Need help on how write this program. "The Eversoft Eraser Company has a list of its customers’ names (not necessarily in alphabetical order) and telephone numbers in a file named "customer" with records of the following form: last_name (String), first_name...
Monday, September 28, 2015 by Poohboi

Science
Does Chewbacca have a human like wiener or is it one of those red rocket type deals? George Lucas won't answer my emails.
Sunday, September 27, 2015 by Adam

science- physics
A car is traveling at a steady 90 km/h in a 50 km/h zone. A police motorcycle takes off at the instant the car passes it, accelerating at a steady 7.3 m/s/s.How much time elapses before the motorcycle is moving as fast as the car? How far is the motorcycle from the car when it...
Sunday, September 27, 2015 by Laura

science
titanium reacts with oxygen a chemical change or a physical change
Sunday, September 27, 2015 by Krystal

  1. Pages:
  2. <<Prev
  3. 15
  4. 16
  5. 17
  6. 18
  7. 19
  8. 20
  9. 21
  10. 22
  11. 23
  12. 24
  13. 25
  14. 26
  15. 27
  16. 28
  17. 29
  18. Next>>