YEAR 10

Which of the following is abundant in the atmosphere?

• Nitrogen

• carbon dioxide

• inert gases

• oxygen

Earth's current atmosphere is

• 78% nitrogen, 21% oxygen, 0.9% argon and 0.037% carbon dioxide
• 78% oxygen, 21%nitrogen, 0.9% argon, 0.037% carbon dioxide
• 78% nitrogen, 21% argon, 1% oxygen
• 78% oxygen, 21% nitrogen, 1% carbon dioxide

The layer of the atmosphere containing the ozone layer is

• troposphere
• stratosphere
• thermosphere
• mesosphere

Heat from the sun travels to Earth by _____.

• conduction
• convection
• insulation
• radiation

A measure of the amount of water vapor in the air is called what?

• Rigidity
• Moisture
• Humidity
• Fog

a mixture of gases that surround the earth

• thermosphere
• Troposphere
• Atmosphere
• Ozone Layer

The change of water from a liquid to a gas.

• evaporation
• precipitation
• condensation
• transpiration

Ocean's cover what percent of the Earth's surface?

• 70 %
• 60 %
• 10 %
• none of the above

What is the water cycle?

• the 3 forms of water
• the movement of water on, above, or below the surface of the Earth
• when water melts
• when clouds form

Why is freshwater important?

• So we can have lakes and Rivers
• There is no such thing as freshwater.
• We need it to survive.