Science Unit 1 Study Guide

Earth's atmosphere has how many layers?

The first layer of the atmosphere from the ground up is the Troposphere (0-12 km).

The layer that contains the ozone layer is the Stratosphere.

Meteors burn up in the Mesosphere.

In the troposphere, temperature decreases as altitude increases.

The layer with the coldest temperatures in the atmosphere is the Mesosphere.

A key characteristic of the stratosphere is very stable air with no weather.

Thermosphere: Where do auroras occur?

Thermosphere: What orbits in this layer?

Thermosphere: How does temperature change with altitude?