Unit 3 Review1 6th grade

As altitude increases in the troposphere, air temperature

• stays the same
• decreases
• increases

Warm air over the beach rises while cooler dense air from the ocean rushes in due to

• reflection
• conduction
• radiation
• convection

When matter is heated, the atoms and/or molecules that make up the matter move faster and further apart causing the matter to:

• become invisible
• expand
• contract
• explode

Hot air is _______________ dense than cold air.

• the same
• zero
• less
• more

During a sunny afternoon it will become warmer because air molecules

• stop moving
• move slower
• disappear
• move faster

The layer of gases surrounding the Earth is called the

• hydrosphere
• biosphere
• lithospher
• atmosphere

The chief cause of ocean currents are

• local winds
• global winds
• revolution of the Earth
• phases of the moon

The main source of water for the atmosphere is Earth's

• rivers
• oceans
• soil
• plants

An ocean current turns when it comes near a

• continent
• Gulf
• Sea
• ice berg

Heat moves through solids by

• radiation
• convection
• conduction
• refraction