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Homework Help: Science: Scientists

Recent Homework Questions About Scientists

Math-Sorry I had a mistake in the first problem.
Please check my work: Label the dependent and independent variable. 1. Time spent studying and Score on a test 2. If a scientist conducts an experiment to test the theory that a vitamin could extend a person's life expectancy. What are the dependent and independent variables? ...

Msth
Please check my work: Label the dependent and independent vstiablr. 1. Time spent studying and Score on a test 2. If a scientist conducts an experiment to test the theory that a vitamin could extend a person's life expectancy. What are the dependent and independent variables? ...

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. ...

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. ...

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. ...

social studies
which culture carried the knowledge of iron tools across Southern Africa in a series of migrations? a. Nubians b. Arabs c. Bantu d. Europeans which group of foreign traders first became involved in Eastern Africa's slave trade? a. Arabs b. British c. Dutch d. Portuguese ...

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! ...

Chemistry
I cannot understand how the mass of the system has changed. There's no need for you to do my work please just explain it to me! :) thanks so much A scientist placed copper powder into a crucible and heated it until all of the copper reacted. The resulting product was cooled ...

math
can you please check my work. sorry to repost but I was skipped over earlier and just want to know if I did this correctly? A scientist uses a submarine to study ocean life. She begins at sea level, which is at an elevation of 0 ft. she travels straight down at a speed of 3....

math
can you please check my work. A scientist uses a submarine to study ocean life. She begins at sea level, which is at an elevation of 0 ft. she travels straight down at a speed of 3.5ft per second. she then travels directly up 30seconds at a speed of 2.2ft per second. 1) after ...

Algebra
A type of plant is introduced into an ecosystem and quickly begins to take over. A scientist counts the number of plants after m months and develops the equation p(m)=19.3(1.089) raised to m, to model the situation. Most recently, the scientist counted 138 plants. Assuming ...

Science
A scientist was studying the effects of oil contamination on ocean seaweed. He thought that oil runoff from storm drains would keep seaweed from growing normally so he decided to do an experiment. He filled two tanks of equal size with water and monitored the dissolved oxygen ...

SS
A scientist was studying the effects of oil contamination on ocean seaweed. He thought that oil runoff from storm drains would keep seaweed from growing normally so he decided to do an experiment. He filled two tanks of equal size with water and monitored the dissolved oxygen ...

Science
A scientist was studying the effects of oil contamination on ocean seaweed. He thought that oil runoff from storm drains would keep seaweed from growing normally so he decided to do an experiment. He filled two tanks of equal size with water and monitored the dissolved oxygen ...

Science
If an experiment disproves a scientist’s hypothesis, what should the scientist do next? Develop a testable question. Revise the hypothesis and try the experiment again.*** Develop a theory based on the data gathered in the experiment. Change the dependent variable.

Science
In general, what would a scientist do after forming a testable question? Design an experiment. Develop a hypothesis**. Draw a conclusion. Analyze data.

science
A scientist makes the measurements shown in the data table below. She needs to know the total volume of her other samples. which of the following shows the total volume reported with the correct number of digits and units. Samole A 12.14 ML Sample B 3.400 ML Sample c 0.7 ML A...

Science
In general what would a scientist do after forming a testable questions? -Design an experiment**** -Develop a hypothesis -Draw a conclusion -Analyze data

Science
A scientist studying the effects of gamma rays on marigolds gathered the data shown below. Hypothesis: Marigolds exposed to higher levels of radiation will not grow as well as marigolds that are exposed to less radiation Plant A: Gamma Rays (Rad/day) is 5. Water (mL/week) 50. ...

Commonwealth connections academy
Question 1. Which of the following statements describes the aim of the person who threw the dart shown in the picture. A. The person's aim was both precise and accurate B. The person's aim was precise, but it was not accurate C. The person's aim was accurate, but it was not ...

Reading
In which sentence is the word periscope used correctly? A. Excited about her finding, the scientist used a periscope to view the organisms in the water sample.**** B. On the night of the full moon, we used the periscope to look at the sky. C. Sitting behind the tall stone ...

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. ...

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. ...

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. ...

SCIENCE!
the second worksheet of SCIENCE! for today performing an experiment read the following statements and then answer the questions. 1. a scientist wants to find out why sea water freezes at a lower temperature than fresh water. 2. the scientist goes to the library and reads a ...

Science
1)A scientist at a chemical company designs and conducts an experiment to determine if a chemical made by the company is harmful to crops. To do this, he sprays the chemical on three plants he has in the laboratory. None of the plants survive. The scientist reports that the ...

Science
After developing a hypothesis a scientist is ready to test it by

Science
A scientist is testing the effects of fertilizer on peanut production. He plants 4 peanut plants and applies a different amount of fertilizer to each plant. Two of the plants die. Can he conclude that the amounts of fertilizer used on those plants were lethal? What other ...

Work like a scientist
If an experiment disproves a scientists hypothesis,what should the scientist do next? A.)Develop a testable question. B.) Revise the hypothesis and try the experiment again. C.)Develop a theory based on the data gathered in the experiment. D.)Change the dependent variable. ...

science
The scientist came to the conclusion that the hypothesis was incorrect. Why is the scientist's conclusion flawed

science
The scientist came to the conclusion that the hypothesis was incorrect. Why is the scientist's conclusion flawed

Science
If an experiment disproves a scientist's hypothesis, what should the scientist do next?

Work like a scientist
If an experiment disproves a scientist's hypothesis, what should the scientist do next?

work like a scientist
In general, what would a scientist do after forming a testable question?

Chemistry Subatomic particles
Fill in the chart (Numbers correspond to each other[I.E 1 in 1st group connects with 1in 2nd]) Subatomic particle found 1.Proton 2.Neutron 3.Electron Scientist 1.Rutherford 2.Chadwick 3.Thomson Experiment 1.Gold Foil Experiment? 2.? 3.Cathode Ray Tube Data Supporting Discovery...

advanced algebra
A type of plant is introduced into an ecosystem and quickly begins to take over. A scientist counts the number of plants after m months and develops the equation mc010-1.jpg to model the situation. Most recently, the scientist counted 138 plants. Assuming there are no limiting...

Science
A scientist has noted a possible relationship between a certain chemical substance found in fish and the occurrence of kidney failure in humans. Which of the following preliminary steps should the scientist take before conducting a controlled experiment? A. Establish a cause ...

intro to psychology
It is the proper role of a psychological research scientist to:

pre-calculus 11
a launch window of 8:00 to 12:00. If t represents the launch time then what is an acceptable range of values for launch times? My thoughts are on this is that the scientist have a window of 4 hours which can include 8:00 and 12:00 but cannot exceed them. So time could be ...

Geometry
A scientist is plotting the circular path of a particle on a coordinate plane for a lab experiment. The scientist knows the path is a perfect circle and that the particle starts at ordered pair (-5, -11). When the particle is halfway around the circle, the particle is at ...

science (cladogram)
How would a scientist use DNA or protein sequences from three different organisms to construct a cladogram?

Science (theory of evolution)
How would a scientist use DNA or protein sequences taken from three different organisms to construct a cladogram.

science
How would a scientist use DNA or protein sequences taken from three different organisms to construct a cladogram.

Integers
A scientist measured the temperature at the surface of a 7 inch deep snow. The temperature was -27 degrees. At ground level, the temperature was 24 degrees. How much warmer was the temperature at ground level.

L A/The Giver
Which of the following elements of the book likely led to it's being banned in several schools? 1: The book put individual happiness over blind obedience to rules 2:Scientist have criticized Lowry for inaccurately describing a futuristic city 3:Many people have tried to create...

Art please help
bramante would have needed the help of what type of specalist to to design a stucturally solid dome on St. Perter's because Basilia? a- engineer b- landscape architect** c- construction worker d- scientist am i right?

theory of evolution
Just need some help with checking my answers 1. In Europe, three lineages of bears evolved from a common ancestor. Two of those lineages led to present-day black bears and brown bears. The third lineage led to cave bear that went extinct 24,000 years ago. Which of the ...

Science
Are these answers correct? 1. Which layer of the sun's atmosphere are you looking at when you look at an image of the sun? Photosphere**** Chromosphere Corona Prominence 2. Which of the following materials could have been found in the giant cloud that formed the solar system? ...

Science please check answers
In a particular breed of cattle, a black coat is dominant over a red coat. If a cow with a red coat is crossed with a black bull that is heterozygous for coat color, what percentage of their offspring would you expect to be black? 25 50 75*** 100 A scientist is studying a ...

algrebra
A scientist is working with 1.3m of gold wire. How long is the wire in millimeters? Be sure to include the correct unit in your answer.

Reading
what is description of an object a scientist might have discovered buried in the city of Pompeii

Science
1. Which layer of the sun's atmosphere are you looking at when you look at an image of the sun? Photosphere Chromosphere*************** Corona Prominence 2. Which of the following materials could have been found in the giant cloud that formed the solar system? Hydrogen and ...

Science
1. Which layer of the sun's atmosphere are you looking at when you look at an image of the sun? Photosphere Chromosphere*************** Corona Prominence 2. Which of the following materials could have been found in the giant cloud that formed the solar system? Hydrogen and ...

English
2.The child was reluctant to (access/venture) into the closet at night because he was unsure whether child-eating monsters really inhabited it in the dark Venture? 3.Th Members of the student council(circulated/convened) promptly affter school to finish their plans for the ...

social studies
2.in what industry did the industrial revolution begin? a)coal mining b)electrical production** c)steel manufacturing d)textile manufacturing 3.Which renaissance scientist first proposed the heliocentric theory? a)Francis Bacon b)Nicolaus Copernicus c)Galileo Galilei*** d)...

social studies
1.which of the following improved during the industrial revolution? a)treatment of disease*** b)pollution in cities c)child labor conditions d)housing for the poor 2.in what industry did the industrial revolution begin? a)coal mining b)electrical production c)steel ...

physics help
Please explain the answers. Thank You 1. A rifle is fired horizontally over a large flat plane. At the instant the rifle is fired, a student drops a second identical bullet from the same height as the rifle. Which bullet hits the ground first? 2. A monkey is hanging from a ...

Science
A scientist is trying to determine the identity of an element. It is highly reactive in water and forms an ionic bond with chlorine. It is also very shiny. The element is most likely A)from group 17 B)from group 1 C)from group 15 D)a noble gas Mrs. Sue Is it C?

math
scientist is mixing a chemical solution for an experiment solution contains 3/8 of chemical solution 1/6 ounce saline solution what is the unit rate of chemical to saline solution? 3/8 x 1/6 + 3/48 divided by 3 + 1/16 is this right

SCIENCE
A SCIENTIST NOTED A POSSIBLE RELATIONSHIP BETWEEN A CERTAIN CHEMICAL SUBSTANCE FOUND IN FISH AND THE OCCURRENCE OF THE KIDNEY FAILURE IN HUMANS. WHICH STEPS SHOULD THE SCIENTIST BEFORE CONDUCTING EXPERIMENT.

chemistry
A scientist measures the standard enthalpy change for the following reaction to be -172.4 kJ : 2SO2(g) + O2(g) 2SO3(g) Based on this value and the standard enthalpies of formation for the other substances, the standard enthalpy of formation of SO2(g) is what in kJ/mol?

Science
A scientist wants to make their experiment more accurate. Which of the following should they do to ensure this. decrease their sample size nothing; there is no way to increase the accuracy of an experiment increase their control amount increase their sample size

ART check answers please
1. A museum professional has been working extended hours to remove dirt and grease that a vandal left on a painting. This professional is most likely an a)curator b)conservationist*********** c)historian d)archaeologist 2. Pick the statement that best describes why the museum...

Chem
A scientist finds that one volume of an unknown gas X combines with 2 volumes of another gas Y to form 2 volumes of a new gas with a formula XY2. What is the balanced equation?

science 1 question
Explain how a scientist would use DNA or protein sequences taken from three different organisms to construct a cladogram. I know what a cladogram is but I have no clue about the DNA or protien thing. Anything would be helpful. Please help! Thanks.

English
Score 1. Choose two of the scientists you read about in the Stories of Scientists unit. Compare and contrast these scientists. Answer this question in no fewer than two paragraphs. Be sure to include specific details about each scientist’s life, career, and personality in ...

Math
A scientist is monitoring the temperature of a holding tank containing fish to be released into a river. In one 12-h period, the highest temperature was 10.4°C and the lowest temperature was 7.6°C. Write an absolute value equation that can be used to report the highest ...

Math
A scientist is monitoring the temperature of a holding tank containing fish to be released into a river. In one 12-h period, the highest temperature was 10.4°C and the lowest temperature was 7.6°C. Write an absolute value equation that can be used to report the highest ...

Science
How would a scientist determine the absolute age of a fossil?

Math
A scientist is monitoring the temperature of a holding tank containing fish to be released into a river. In one 12-h period, the highest temperature was 10.4°C and the lowest temperature was 7.6°C. Write an absolute value equation that can be used to report the highest ...

History
1. Who controlled the most territory bordering the Louisiana Purchase? A- Spain B- France C- Great Britain D-Mexico 2. Which of the founding fathers was an author, a statesman, and a scientist? A- John Adams B- Benjamin Franklin C- Thomas Jefferson D-George Washington 3. What ...

math-algebra HELP!!!!
a scientist theorized that you can estimate the temperature by counting how often crickets chirp. the scientist gathers the data in the table shown. A)how many cricket chirps would you expect to indicate a temperature of 85 degrees? include a graph and an equation as part of ...

math help DX
a scientist theorized that you can estimate the temperature by counting how often crickets chirp. the scientist gathers the data in the table shown. A)how many cricket chirps would you expect to indicate a temperature of 85 degrees? include a graph and an equation as part of ...

english (3rd grade)
Kindly correct my answers. Direction: Arrange the sentences to form unified, coherent, logical and orderly paragraph. 1. a.For example ostriches and penguins cannot fly. b.The fastest birds can fly 100 km per hour. c.When people think of birds, they think first of their flying...

math
A scientist is mixing a chemical solution for an experiment. The solution contains 3/8oz of chemical and 1/6 ounce saline solution. What is the rate of chemical to saline?

biology
Explain how a scientist would use DNA or protien sequences taken from three different organisms to create a cladogram

biology
Explain how a scientist would use DNA or protien sequences taken from three different organisms to create a cladogram?

Science Help!!!!
To solve the problem of a polluted stream a scientist traced where the pollution was coming from. She determined that the pollution was coming from many small sources. She worked on a plan to help reduce the pollution to the stream. This is an example of (blank) pollution ...

science
By studing rock layer scientist can learn about changes in earth formation and climate. True or false. Is the anser true

Science
A famous scientist once said that wherever in the universe life exists. Some of those life-forms must be colored. Why would scientist make such a statement?

English
The narrator of My Forbidden Face describes a cartoon of the scientists perplexed by the germ they are studying, The Taliban, in order to a)emphasize her confusion with the spread of all the new rules. b)Imply that the leaders are sick with a virus that cannot be cured. c)show...

English
The narrator of My Forbidden Face describes a cartoon of the scientists perplexed by the germ they are studying, The Taliban, in order to a)emphasize her confusion with the spread of all the new rules. b)Imply that the leaders are sick with a virus that cannot be cured. c)show...

Science
A scientist is studying a plant species in which the flower color genes are codominant. The scientist crosses a plant with red flowers and a plants with white flowers. The offspring would most likely have... A. Red flowers B. White flowers C. Pink flowers D. Red flowers with ...

Life sciences
What are the biological terms of the following 1.finger-like outgrowths of the epidermir roots 2. scientist who specialise in the study of the annual rings of trees 3. the membrane around the vacuole 4. the building blocks of protein

Science
A scientist is studying a plant species in which the flower color genes are codominant. The scientist crosses a plant with red flowers and a plant with white flowers. The offspring will most likely have A.red flowers B.white flowers C.pink flowers D.red flowers with white ...

Biology
The scientist analyzes the insulin molecules, which are proteins, of three different species, A, B, and C. The insulin from A is different from B in six ways and from C in three ways. The insulin from B is different from C in two ways. Which two species appear to be most ...

English
The contestants in the quiz show sat wth we,us audience members. I think us because it is an object? For we, us scientist, the discovery of a new planet would be exciting. I think us?

chemistry - DrBob?
Hi! Can you tell me if I chose the right options for my chemistry homework? My answers are at the bottom. 1. Electrostatic interaction is important for which type of bond? A. ionic bond B. triple covalent bond C. single covalent bond D. double covalent bond 2. When an atom ...

Chemistry
Hi! Can you tell me if I chose the right options for my chemistry homework? My answers are at the bottom. 1. Electrostatic interaction is important for which type of bond? A. ionic bond B. triple covalent bond C. single covalent bond D. double covalent bond 2. When an atom ...

scientist
I need 10 example objects that use energy in my house... What are they? Also can you help me?!!!!!!

physics
About the years 214-212 BC, the Greek philosopher and scientist Aρχιμηδ ​51;ζ is said to have repelled a Roman attack with a "death-ray" concave mirror, using sunlight to set the approaching fleet on fire. Assume an early morning ...

Science
A scientist is studying a plant species in which the flower color genes are codominant. The scientist crosses a plant with red flowers and a plant with white flowers. The offspring will most likely have A. red flowers B. white flowers C. pink flowers D. red flowers with white ...

science
3.If a gap in the fossil record exists between ancient and modern forms of a species, which of the following is the most appropriate conclusion? A. The gap indicates that gradualism must have occurred for the species to evolve from ancient to modern form.*** B. The gap ...

Please help science
A scientist observes that termites are fed a certain antibiotic die a starvation after a few days. The scientist also notices that certain protists that live inside the termites guy are affected by the antibiotic in a peculiar way: although the protists continue to thrive , ...

Science urgent help
A scientist observes that termites are fed a certain antibiotic die a starvation after a few days. The scientist also notices that certain protists that live inside the termites guy are affected by the antibiotic in a peculiar way: although the protists continue to thrive , ...

Earth Science - Please Check 4 Answers
Please help me with the following questions: 2. Which type of information is best represented by a chart? A. the sequence of chemical reactions in photosynthesis B. the percentage composition of gases in car exhaust C. the rate of carbon dioxide production during exercise D. ...

science
1) Which of the following is a valid reason why a scientist might reject a scientific theory? (1point) Some people disagree with it. It covers too broad a topic. New evidence contradicts it.*** It is too old. 2) A scientific hypothesis must be (1point) Correct Able to be ...

SCIENCE
A scientist observing a group of spider monkeys noticed that the adult females often spend time picking leaves off of tree branches. The scientist hypothesizes that this behavior is caused by boredom. Is the scientists hypothesis valid? A- no, emotions of non-human organisms ...

Chemistry
A scientist wants to make a solution of tribasic sodium phosphate, Na3PO4, for a laboratory experiment. How many grams of Na3PO4 will be needed to produce 400mL of a solution that has a concentration of Na+ ions of 1.10M ?

Science
Using an example, explain how being able to understand scientific principles and think scientifically can help you solve problems and answer questions in your everyday life. i wrote, If we understand scientific principles and think like a scientist we solve problems in our ...

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Homework Help: Science

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