Quiz about 6th Grade Science Benchmark Review

Question 1

A student is investigating the strength of electromagnets she created using batteries, wire, and nails. 
She uses two different-sized nails and varies the number of coils of wire around the nail to determine how many paper clips each configuration can lift. She makes a data table of the results. 
 The student hypothesizes that the number of coils has a cause-and-effect relationship on the strength of the magnetic devices she made. Which would be the BEST way for the student to test the devices to be sure that her hypothesis is accurate?

Accepted Answer

d. She should use just one length of nail and test more of a variety of coil numbers, including 0 coils.

Answer

a. She should give the devices the same number of coils and retest them.

Answer

b. She should increase the distance between the devices and the paper clips.

Answer

c. She should repeat the same tests on each device again to collect more data.

Question 2

A student is conducting an investigation to show how magnetic forces can act at a distance from an object. 
What can the student conclude from the data that he gathered in his investigation?

Accepted Answer

c. The force is stronger with less distance between the magnet and the object.

Answer

a. The force is not related to the distance from the object.

Answer

b. The force of the magnet becomes stronger the farther it is from the object.

Answer

d. The force of the magnet becomes stronger and then weaker the farther it is from the object.

Question 3

A student rubs a comb on a cloth. She then holds the comb 30 centimeters above some small pieces of paper on a table, but the paper does not move. When the comb is moved closer to the paper, the paper moves through the air to the comb. 
Which statement explains why the paper does not move toward the comb when the comb is farther away?

Accepted Answer

d. The attractive field from the comb is weaker farther from the comb.

Answer

a. The paper is not attracted to the comb.

Answer

b. The comb and the paper have identical charges.

Answer

c. Only metallic objects can be attracted to each other.

Question 4

Each day, Jorge brings an insulated container filled to the top with his favorite cold drink to school. This morning, he was only able to fill his container halfway. At lunchtime when he opened his container, he noticed that his drink was not as cold as usual. 
Which statement best explains why his drink was warmer at lunchtime?

Accepted Answer

c. The same amount of energy was transferred through the container to a smaller amount of matter.

Answer

a. A larger amount of energy was transferred through the container to the same amount of matter.

Answer

b. A smaller amount of energy was transferred through the container to the same amount of matter.

Answer

d. The same amount of energy was transferred through the container to a larger amount of matter.

Question 5

Rey wants to put her insulated container filled with a cold drink in a bucket of ice until she is ready to drink it. She believes that this will keep her drink colder than if she leaves it sitting in her locker. Explain whether Rey's idea is correct or incorrect.

Accepted Answer

a. Correct: Energy will transfer from the cold drink to the ice, causing the drink to get colder.

Answer

b. Correct: Energy will transfer from the cold drink to the ice, causing the drink to get warmer.

Answer

c. Incorrect: Energy will transfer from the ice to the cold drink, causing the drink to get warmer.

Answer

d. Incorrect: Energy will transfer from the cold drink to the ice, causing the drink to get warmer.

Question 6

A science teacher asks her class to compare the way in which heat is transferred to water in a pond as opposed to soil at the edge of the pond. Which of the following investigations will help them make this comparison?

Accepted Answer

c. Place soil and water in separate containers, place them in the sun, and monitor the temperatures of each container.

Answer

a. Mix water and soil in a container, place it in the sun, and measure the temperature of the container.

Answer

b. Place soil and water in separate containers, place them indoors, and monitor the temperature of the containers.

Answer

d. Place soil in the bottom of a container and water on top, place it in the sun, and measure the temperature of the container.

Question 7

Jasmyne finalized a design of a circuit that made two lamps in her room light up at once. The image below shows her initial design, which originally did not work. What change did she make to this initial design that eventually resulted in both lights working?

Accepted Answer

D

Answer

A

Answer

B

Answer

C

Question 8

Part of the food web from a local pond is shown in the pictures below. If all of the snakes were removed from the pond, what effect would this have on the ecosystem?

Accepted Answer

d. There would be an increase in the turtle population, which would cause a decrease in both the slug and plant populations.

Answer

a. There would be an increase in the turtle population, which would cause an increase in the slug population.

Answer

b. There would be an increase in the number of turtle eggs, but the slug and plant populations would remain the same.

Answer

c. There would be a decrease in the turtle population, which would cause an increase in both the slug and plant populations.

Question 9

Part of the food web from a local pond is shown in the pictures below. If all of the slugs were removed from the pond, what effect would this have on the ecosystem?

Accepted Answer

d. The turtles would rely on only plants to survive, but there would be more plants available. Depending on the change in the plant population, turtle and snake populations might be affected.

Answer

a. All of the turtles and snakes would die.

Answer

b. Snakes and turtles would need to eat more plants to maintain their populations.

Answer

c. The turtles would eat the same amount of plants that they always ate, but no slugs, so there would be fewer turtles and snakes.

Question 10

Cattle egrets are birds that follow behind grazing cattle. The egrets eat the bugs that fly out of the grass as the cattle walk through. Which statement describes the relationship between the cattle egrets and the cattle?

Accepted Answer

c. commensalism, because the cattle egret benefits, but the cattle neither benefits nor is harmed

Answer

a. predation, because the cattle egrets eat the bugs

Answer

b. mutualism, because both the cattle egrets and the cattle benefit

Answer

d. parasitism, because the bugs might have bit the cattle egrets or the cattle and caused them harm

Question 11

In a forest ecosystem, skunks eat mice, while coyotes eat both mice and skunks. Do these two facts provide enough evidence to predict what will happen to the coyote population if the skunks all die?

Accepted Answer

d. No; since the skunks also eat the mice, there may or may not be enough mice for the coyotes to maintain their population.

Answer

a. Yes; with the skunks gone, there will be too few mice, and the coyote population will decrease.

Answer

b. No; with the skunks gone, there will be many more mice, but this does not affect the coyote population.

Answer

c. Yes; with the skunks gone, there will be many more mice, and they will chase off the coyote population.

Question 12

Energy from the sun is essential to the cycle of life on our planet. Producers, consumers, and decomposers are a part of this cycle. What is the role of decomposers in the energy cycle?

Accepted Answer

d. Decomposers break down dead life forms for their own survival; this process also releases nutrients that other life forms use.

Answer

a. Decomposers take carbon from the soil and make it available to other life-forms.

Answer

b. Decomposers break down dead organisms and release energy from those organisms into the atmosphere.

Answer

c. Decomposers take energy from the sun and convert it into a form that is useable by other life-forms.

Question 13

Science students are planning an investigation to collect data that they can use to predict the weather. The students decide to do an experiment with condensation. Their goal is to see how much humidity, or moisture, is in the air each day, which will allow them to predict if it will rain. To set up their investigation, they need a thermometer, a tin can, water, and ice cubes. They perform the experiment outside, placing water in the can, along with the thermometer. The water and the can start out at the same temperature as the air, but the students watch the water and can temperature decrease as they add ice cubes into the can.
 On their first day of testing, after a few minutes, the students find drops of water forming on the outside of the can at a temperature reading of 62 degrees Fahrenheit. What conclusion can they draw from this to make their weather prediction?

Accepted Answer

d. Condensation has occurred, so if the air temperature drops to 62 degrees Fahrenheit, it will most likely rain.

Answer

a. The water inside the can has moved to the outside of the can, so it will most likely rain.

Answer

b. Raindrops have formed on the outside of the can and it can be expected to rain immediately.

Answer

c. The can is about to freeze, so if the air temperature drops to 62 degrees Fahrenheit, it will most likely snow.

Question 14

Changes in energy drive the water cycle, shown in the diagram below. 
Which statement describes one way in which energy transfers through the water cycle?

Accepted Answer

a. Energy from the sun causes water in the river to evaporate.

Answer

b. Runoff from mountains requires energy to form condensation.

Answer

c. Energy from the clouds causes shadows, which decreases runoff.

Answer

d. Energy from precipitation causes water to freeze on mountaintops.

Question 15

Students are given 10 milliliters of warm freshwater and 10 milliliters of cold salt water. The freshwater has blue dye in it and the salt water has red dye. The waters are different colors so students can more easily make observations. The students mix the two samples together into one graduated cylinder. Students draw representations of what they observed. 
Which student representation most accurately shows the results of this investigation?

Accepted Answer

A

Answer

B

Answer

C

Answer

D

6th Grade Science Benchmark Review

20 questions

A student is conducting an investigation to show how magnetic forces can act at a distance from an object. What can the student conclude from the data that he gathered in his investigation?

Rey wants to put her insulated container filled with a cold drink in a bucket of ice until she is ready to drink it. She believes that this will keep her drink colder than if she leaves it sitting in her locker. Explain whether Rey's idea is correct or incorrect.

A science teacher asks her class to compare the way in which heat is transferred to water in a pond as opposed to soil at the edge of the pond. Which of the following investigations will help them make this comparison?

Jasmyne finalized a design of a circuit that made two lamps in her room light up at once. The image below shows her initial design, which originally did not work. What change did she make to this initial design that eventually resulted in both lights working?

Part of the food web from a local pond is shown in the pictures below. If all of the snakes were removed from the pond, what effect would this have on the ecosystem?

Part of the food web from a local pond is shown in the pictures below. If all of the slugs were removed from the pond, what effect would this have on the ecosystem?

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