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Worksheets7th Grade Q2 Science Review
Total questions: 24
Worksheet time: 18mins
Name
Class
Date
1.
1. How is ultraviolet light different from the light emitted by a flashlight? (7.P.10.1)
a)
Ultraviolet light is brighter than the light from a flashlight.
b)
Only light from a flashlight can travel through empty space.
c)
Ultraviolet light has a longer wavelength than the light from a flashlight.
d)
Ultraviolet light is invisible to the human eye.
2.
2. White light is made up of a spectrum of many different colors. What property is used to divide the various colors in the spectrum? (7.P.10.1)
a)
speed
b)
wavelength
c)
density
d)
temperature
3.
3. What is the primary difference between the colors of visible light? (7.P.10.1)
a)
the brightness of each color
b)
the heat produced by each color
c)
the wavelength of each color
d)
the speed of each color in empty space
4.
4. Which of the following materials would sound travel fastest through? (7.P.10.3)
a)
a sponge
b)
a beaker of water
c)
the air in the room
d)
a wooden desk
5.
5. Which of the following materials would light travel fastest through? (7.P.10.3)
a)
air
b)
plastic
c)
water
d)
light waves travel through all matter at the same speed
6.
6. How does the speed of light in water compare to its speed in air? (7.P.10.3)
a)
The speed is faster in water than in air because the molecules are closer together.
b)
The speed is slower in water than in air because the molecules are closer together.
c)
The speed is the same in water because it is constant in all mediums.
d)
The speed cannot be compared without knowing the temperature.
7.
7. Which of the following could result from heat being transferred to a substance? (7.P.11.1)
a)
The substance changes from a liquid to a gas.
b)
The substance changes from a gas to a liquid.
c)
The substance changes from a liquid to a solid.
d)
The substance changes from a gas to a solid.
8.
8. The more heat the particles contain, the faster they move about. In which state of matter do the particles have the most heat? (7.P.11.1)
a)
in both a solid and liquid
b)
in a liquid
c)
in a gas
d)
in a solid
9.
9. If the temperature of an object is 30° C, which of the following temperatures would indicate the most heat that was removed from this object? (7.P.11.1)
a)
40*C
b)
30*C
c)
20*C
d)
10*C
10.
10. Alexander hooks a rubber band around his thumb and forefinger. He moves his fingers apart, stretching the rubber band. With a quick, sudden motion, he bends his thumb forward so that the rubber band slips off. What happens next? (7.P.11.2)
a)
The potential energy stored in the rubber band changes to heat energy.
b)
The potential energy stored in the stretched rubber band changes to kinetic energy.
c)
The potential energy stored in Alexander’s body changes to kinetic energy.
d)
The potential energy stored in Alexander’s body changes to potential energy in the rubber band.
11.
11. The transfer of energy that takes place between gravitational potential energy and kinetic energy on a roller coaster demonstrates which of the following laws? (7.P.11.2)
a)
The Law of Conservation of Energy
b)
The Law of Conservation of Matter
c)
The Law of Conservation of Living Things
d)
The Law of Conservation of Mechanical Energy
12.
12. The motions of a toy drone are driven by an electric motor. The power source for the toy's motor is a pair of batteries. Which of the following best summarizes the energy transformations taking place in the toy drone? (7.P.11.2)
a)
Mechanical energy is transformed into light energy, and the light energy is transformed into electrical energy.
b)
Electrical energy is transformed into chemical energy, and the chemical energy is transformed into mechanical energy.
c)
Chemical energy is transformed into electrical energy, and the electrical energy is transformed into mechanical energy.
d)
Light energy is transformed into electrical energy, and the electrical energy is transformed into mechanical energy.
13.
13. Which statement best explains why a bouncing basketball will not remain in motion forever? (7.P.11.3)
a)
The energy is transferred to heat and chemical energy as it hits the ground.
b)
The energy is transferred to light and potential energy as it hits the ground.
c)
The energy is used up and destroyed as it hits the ground.
d)
The energy is transferred to sound and heat energy as friction as it hits the ground.
14.
14. Which of the following would best demonstrate the Law of Conservation of Energy? (7.P.11.3)
a)
Isaiah performed an experiment where he heated 40 g of ice cubes until they changed state to a gas.
b)
Kendra performed an experiment to demonstrate friction by rubbing her hands together for 50 seconds. She noticed her hands became warm.
c)
Annabelle performed an experiment where she dropped a tennis ball 35 times and counted the number of bounces.
d)
Cameron performed an experiment in which he kept ice from melting for 1 hour.
15.
15. Which of the following statements cites evidence about the behavior of energy in the image below? (7.P.11.3)
a)
Chemical energy from the battery is transferred into electrical energy and then changed into light energy and then is transferred back into the battery to restore chemical energy.
b)
Electrical energy is created from the chemical energy of the battery and is then changed into sound energy.
c)
Chemical energy from the battery is transferred into electrical energy until the energy is destroyed and the battery stops working.
d)
Chemical energy from the battery is transferred into electrical energy and then changed into light energy.
16.
16. In which way is heat transferred? (7.P.11.4)
a)
It is transferred from cooler to warmer objects.
b)
It is transferred from larger to smaller objects.
c)
It is transferred from warmer to cooler objects.
d)
It is transferred from smaller to larger objects.
17.
17. Krystal puts a hot spoon into a bowl of cold ice cream. Based on your knowledge of heat flow, what will be the result? (7.P.11.4)
a)
The ice cream will melt because the cold will flow from the ice cream to the spoon.
b)
The spoon will become colder because the cold will flow from the ice cream to the spoon.
c)
The ice cream will melt because heat will flow from the spoon to the ice cream.
d)
The ice cream will not be affected.
18.
18. Examine the data table below. At 40 seconds, Ken combined Beaker A and Beaker B. Which of the following statements below best describes what happened? (7.P.11.4)
a)
The temperatures even out to 50o C and gradually transition to room temperature.
b)
The temperatures rise to 100o C because their thermal energy combines.
c)
The temperatures even out to 80o C and gradually transition to room temperature.
d)
The temperatures lower to 40o C because their thermal energy cancels out.
19.
19. John performed an experiment. He feels that replicating his results will increase the validity of his results. Which of the following is an example of replication? (7.N.1.2)
a)
Another student copying John’s experiment without permission
b)
John redoing his own experiment five more times and getting similar results
c)
Another student redoing John’s experiment five more times and getting similar results
d)
John researching another scientist’s experiment for similarities
20.
20. A scientist has a hypothesis involving the genes of two spotted lizard breeds. He designed an experiment to test his hypothesis. After he completes the experiment, which of the following additional steps would have the greatest impact on strengthening his ideas? (7.N.1.2)
a)
He should repeat his experiment at least one more time before sterilizing his equipment.
b)
He should repeat his experiment then have someone else replicate his experiment.
c)
He should take the lizards to a wildlife sanctuary and release them.
d)
He should send his results to another scientist to look over.
21.
21. Sandy is conducting an experiment to see if the grades of dancers are better than the grades of baseball players. She organizes the dancers into group A and the baseball players into group B. She records the grades and makes the conclusion that the dancers have overall better grades. Is Sandy correct in her statement that this is an experiment? (7.N.1.3)
a)
Sandy is incorrect because she did not test anything, so this is an observation.
b)
Sandy is correct because she obtained the grades and compared the groups, so this is an experiment.
c)
Sandy is incorrect because she did not collect the data accurately.
d)
Sandy is correct because she organized the students into two groups.
22.
22. Steph Curry practices his 3-pointers for two hours every day for five weeks with basketball A. He documents how many times he makes a basket and how many times he misses. He does the same process with basketball B and C. Steph compares the percentage of baskets and misses in a chart and concludes that basketball A is the best one for him to use for the game. After the game, he tested basketballs A, B and C again, and determined that basketball A was still the best one. Which answer best represents the aspects of the scientific process that Steph used? (7.N.1.2)
a)
He used repetition because he retested the basketballs.
b)
LeBron James tested the basketballs and replicated his experiment.
c)
He formed a new hypothesis about the basketballs after the game.
d)
He performed another experiment testing shoes instead of basketballs.
23.
23. According to the graph below, analyze the rate of carrot growth with “Growfast Fertilizer”. What is the best amount of fertilizer to use to grow carrots the fastest?
(7.N.1.3)
a)
12 grams
b)
9 grams
c)
8 grams
d)
5 grams
24.
24. Juan wants to know the answer to the question, “Does soil type affect how tall bean plants grow?” Which investigation would best help Juan answer this question? (7.N.1.3)
a)
Juan decides to observe bean plants in the wild and measure their growth daily. Juan records the measurements in his science notebook.
b)
Juan creates a model of a bean plant and observes its growth in different soil types daily for a month. Juan shares his findings with Ms. McDonald.
c)
Juan goes to Ms. McDonald’s farm to observe the growth of the farm's beans. He also measures the growth of the bean plants in soil for a month.
d)
Juan designs an experiment in which he plants bean plant seeds in two different soil types and also plants them in his yard as a control. He then measures the growth of each bean plant daily.
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