Grade 3 Online Homework

Water covers about..........................................of the Earth's surface.

• one-half

• one-forth

• three-forths

From the outer space,Earth looks mostly....................................

• white

• blue

• green

Most of the water on the Earth's surface is................................................

• in lakes

• deep underground

• in oceans

.....................................is the blanket of the air that wraps around the planet.

• Humidity

• Weather

• Atmosphere

.........................................is how much water vapor in the atmosphere.

• Atmosphere

• Humidity

• Weather

................................is when the liquid water changes into a gas called water vapor.

• Condensation

• Evaporation

• Precipitation

........................................is when the water vapor changes back again into liquid water ,forming the clouds.

• Evaporation

• Condensation

• Precipitation

..................................is the liquid water leaving the clouds.

• Evaporation

• Condensation

• Precipitation

All the clouds are made of ice crystals only. ( )

• True

• False

Rain,freezing rain , sleet and snow are different forms of precipitaion.

• True

• False