Unit 9

Question 1

Atmosphere

Answer 1

A mixture of gases that surrounds a planet or moon.

Question 2

Gravity

Answer 2

A force of attraction between objects that is due to their masses.

Question 3

Accomodations

Answer 3

Changes that must be made in an environment to maintain livable conditions for humans.

Question 4

Manned-Space Exploration

Answer 4

Humans on board space craft.

Question 5

Pressure

Answer 5

Continuous physical force exerted on or against an object by something in contact with it.

Question 6

Proximity

Answer 6

Closeness.

Question 7

Radiant Energy

Answer 7

The energy we get from the sun, includes infrared and ultraviolet energy.

Question 8

Temperature

Answer 8

Measurement of heat.

Question 9

Solar System

Answer 9

Sun, planets, and all the other objects that revolve around the sun.

Question 10

Micro Gravity

Answer 10

Condition in which people or objects appear to be weightless.

Question 11

Habitable Zone

Answer 11

Range of orbit around a star in which a plant can support liquid water.