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SCI-7 U5

Vocab Quiz 1

QuestionAnswer
atmosphere An envelope of gases that surrounds the Earth and provides the mixture of gases necessary for all living things to survive.
troposphere The layer of Earth’s atmosphere that extends from Earth’s surface to an altitude of about 17 km, has decreasing temperature as altitude increases, and contains almost all weather.
stratosphere The layer of Earth’s atmosphere with an altitude of about 17 km to about 50 km, has increasing temperature with increasing altitude, and contains jet streams and the ozone layer.
jet streams Very high speed winds in the stratosphere caused by differences between cold polar air and warm tropical air.
ozone A special form of oxygen (O3) that acts as a shield from ultraviolet (UV) radiation.
UV radiation Invisible electromagnetic radiation from the Sun that causes sunburns and skin cancer.
mesosphere The layer of Earth’s atmosphere that extends from about 50 km to about 80 km, has decreasing temperature as altitude increases, and protects us from meteoroids.
thermosphere The layer of Earth’s atmosphere with an altitude of about 80 km to thousands of km above Earth's surface, has increasing temperature with increasing altitude, and contains two sub-layers: the Ionosphere and the Exosphere.
ionosphere The sub-layer of the Thermosphere with an altitude of about 80 km to about 550 km above Earth's surface, has increasing temperature with increasing altitude, and is where the Northern Lights and radio communication occurs.
exosphere The sub-layer of the Thermosphere with an altitude of about 550 km to about thousands of km above Earth's surface, has increasing temperature with increasing altitude, and is where the satellites orbiting Earth are located.
Created by: susanmason