Grade 11 Geography Atmosphere Quiz

What gas composes about 20% of the Earth's atmosphere?

• oxygen

• nitrogen

• carbon dioxide

What type of air pressure is caused by warm air rising in a hurricane?

• occluded

• low

• stationary

• high

Air pressure ________ as you go higher up in the atmosphere

• increases

• decreases

How does the atmosphere help support life on Earth?

• providing oxygen

• protecting from solar radiation

• regulating the temperature

• all of the above

______ winds are those that are strongly influenced by the Earth's terrain (mountains, vegetation or bodies of water)

• global

• local

What force holds the atmosphere to the Earth?

• centrifugal force

• coriolis force

• pressure gradient force

• gravity

The greater the difference in air pressure, the greater the wind speed.

• True

• False

What science studies forces and processes that produce weather?

• astronomy

• meteorology

• geology

• oceanography

Clouds are formed by the ______ motion of air

• upward

• downward

Cyclones are _____ pressure centres

• low

• high