Potential and Kinetic Energy

Question 1

Earth’s atmosphere is mostly nitrogen, which makes up about 78 percent of the atmosphere, and , which makes up about 21 percent. in the air condenses around tiny particles, causing clouds and rain. The gas exists in small amounts but is very important because plants use it to make food.

Revolt · Accepted Answer

B: oxygen

Question 2

Earth’s atmosphere is mostly nitrogen, which makes up about 78 percent of the atmosphere, and , which makes up about 21 percent. in the air condenses around tiny particles, causing clouds and rain. The gas exists in small amounts but is very important because plants use it to make food.

Revolt · Accepted Answer

C: water vapor

Question 3

How does the atmosphere protect life on Earth? Check all that apply.It provides oxygen for living things.It prevents Earth from being hit by meteoroids.It allows water to exist as a liquid.It purifies water that falls as snow and rain.It blocks the Sun’s harmful rays.

Revolt · Accepted Answer

A: It provides oxygen for living things.; B: It prevents Earth from being hit by meteoroids.; C: It allows water to exist as a liquid.; E: It blocks the Sun’s harmful rays.

Question 4

Density is the amount of mass in a certain .

Revolt · Accepted Answer

B: volume

Question 5

Air results from a column of air pushing on an area.

Revolt · Accepted Answer

A: pressure

Question 6

Earth’s atmosphere is mostly nitrogen, which makes up about 78 percent of the atmosphere, and , which makes up about 21 percent. in the air condenses around tiny particles, causing clouds and rain. The gas exists in small amounts but is very important because plants use it to make food.

Revolt · Accepted Answer

A: carbon dioxide

Question 7

A measure of how tightly air molecules are packed together is called .

Revolt · Accepted Answer

B: density

Potential and Kinetic Energy Answers

More from this Course

TRY EDGENUITY HACKS