7.3.1/Samantha

Question 1

Atmosphere

Answer 1

An atmosphere is a layer of gas or layers of gases that envelope a planet, and is held in place by the gravity of the planetary body.

Question 2

Altitude

Answer 2

The height of an object or point in relation to sea level or ground level.

Question 3

Density

Answer 3

Density, is the substance’s mass per unit of volume. The symbol most often used for density is p, although the Latin letter D can also be used.

Question 4

Troposphere

Answer 4

The lowest layer on Earth’s atmosphere