Mrs. Estes' Atmosphere Flashcard

Front

What is an important job the atmosphere does for Earth?

Back

help to regulate the temperature on Earth

Front

The early atmosphere contained smaller amounts of oxygen, due to the...

Back

lack of plant life

Front

Which gas makes up the largest component of Earth's atmosphere? Options: oxygen, nitrogen, argon, carbon dioxide

Back

nitrogen

Front

What gases needed to be established in Earth's atmosphere before the atmosphere was able to absorb and maintain heat? (Options: carbon dioxide, oxygen, nitrogen, hydrogen)

Back

carbon dioxide

Front

When the atmosphere first formed, was the air quality better or worse than it is now for living things?

Back

worse, it was hostile to living organisms

Front

Earth's early atmosphere was most likely formed by....

Back

volcanic eruptions

Front

What is one way human actions can affect the atmosphere? Options: burning fossil fuels reduces convection, passing through the atmosphere using airplanes and rockets disrupts the jet stream, burning fossils fuels releases CO2, increasing greenhouse effect

Back

burning fossils fuels releases CO2, increasing greenhouse effect

Front

Which of these human activities has allowed carbon dioxide levels in the atmosphere to increase? cutting down trees, open-pit mining, over-hunting animals, building houses

Back

cutting down trees

Front

What do scientists base the division of the atmosphere on? Options: sudden changes in air pressure, sudden changes in temperature, sudden changes in magnetic declination

Back

sudden changes in temperature

Front

The ozone layer protects life on Earth from...

Back

Ultraviolet rays