Unit Test — Cumulative exam

Question 1

Raj is trying to make a diagram to show what he has learned about nuclear fusion.Is his diagram correct, and if not, how could he fix it?

Revolt · Accepted Answer

No, he should place the He atom and energy on the right, and the H atoms and heat and pressure on the left.

Question 2

Look at this image of a galaxy.

Revolt · Accepted Answer

elliptical

Question 3

Malika is writing an essay about the Sun. Below is the first paragraph in the essay.The Sun is an average-size star that is located at the center of the solar system. This hot, glowing ball of gas has a diameter of 1,393,000 km. This means 109 Earths would fit side by side across the diameter of the Sun. At the surface, the Sun’s temperature is about 550 degrees Celsius. Earth is located just under 150 million kilometers from the Sun.Malika quickly realizes this paragraph contains an error. Which statement corrects the error?

Revolt · Accepted Answer

The Sun’s surface temperature is about 5,500 degrees Celsius.

Question 4

Study the image

Revolt · Accepted Answer

Air moves in a direction that creates land breezes.

Question 5

Look at the image of the solar system.

Revolt · Accepted Answer

Y

Question 6

Look at the image of the solar system.

Revolt · Accepted Answer

Mercury

Question 7

Which blow over long distances?

Revolt · Accepted Answer

trade winds

Question 8

Which interaction contributes to the greenhouse effect?

Revolt · Accepted Answer

Gases in the atmosphere absorb heat.

Question 9

Which statement identifies a reason to preserve wetlands?

Revolt · Accepted Answer

They store floodwaters.

Question 10

Which two words identify the scientific parts of a wave?

Revolt · Accepted Answer

crest and trough

Unit Test — Cumulative exam Answers

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