Science

Front

What happens to air density as altitude increases?

Back

Air density decreases as altitude increases.

Front

What is the importance of Earth's atmosphere?

Back

It protects from solar radiation, regulates temperature, and contains essential gases like oxygen and carbon.

Front

What is the troposphere?

Back

The fourth layer of the atmosphere where weather occurs, it touches the Earth's surface, contains the jet stream, and has the greatest air pressure.

Front

What happens to temperature in the troposphere with altitude?

Back

Temperature decreases with altitude due to decreasing density.

Front

What is the stratosphere known for?

Back

It contains most of the ozone layer, which protects Earth from ultraviolet rays, and temperature increases with altitude due to ozone absorption of solar radiation.

Front

What is the mesosphere's role?

Back

It protects Earth from meteoroids and has the coldest temperatures due to low air density.

Front

What is the thermosphere?

Back

The highest layer of the atmosphere, sometimes split into two layers, and is the hottest layer.

Front

What are the exosphere and ionosphere?

Back

The exosphere is where satellites orbit, and the ionosphere is where radio waves bounce back to Earth's surface.

Front

What are the primary gases of the atmosphere and their percentages?

Back

Nitrogen - 78%, Oxygen - 21%, Argon - 0.9%.

Front

What is the greenhouse effect?

Back

A process that traps heat from the sun to maintain Earth's temperature, but excessive trapping leads to global warming.