Earth 101 Review: Enviro Test 1

Place energy comes from for weather on Earth

• the Earth's core
• volcanoes
• geothermal vents
• the Sun

Earth's atmosphere is held down by

• radiation
• gravity
• magnetism
• conduction

Two gases that make up 99% of Earth's atmosphere

• carbon dioxide & oxygen
• nitrogen & carbon dioxide
• nitrogen & oxygen
• nitrogen & water vapor

Gas that is given off as a waste product from respiration of living organisms

• oxygen
• carbon dioxide
• nitrogen
• hydrogen

Water in the form of gas is called

• ice
• graupel
• sleet
• water vapor

Layer of Earth's atmosphere where weather occurs

• thermosphere
• mesosphere
• stratosphere
• troposphere

Layer of Earth's atmosphere in which we live

• thermosphere
• mesosphere
• stratosphere
• troposphere

Earth's ozone layer is important because it absorbs

• visible light
• ultraviolet radiation
• x-rays
• radio waves

Layer of Earth's atmosphere that contains most of the ozone

• thermosphere
• mesosphere
• stratosphere
• troposphere

Uppermost layer of Earth's atmosphere

• thermosphere
• mesosphere
• stratosphere
• troposphere