Unit 2 Lesson 2 Review - Making Waves

How are SURFACE currents in the ocean formed?

• by blowing wind

• by temperature changes

• by differences in salinity

• By Earth's rotation

How are air and water alike?

• they both carry nutrients that fish need

• they both rise when heated

• they weigh the same

• they are always the same temperature

The rotation of Earth causes ocean currents to

• rise to the surface or fall

• bend left or right

• move from area to area

• become more or less salty

What is salinity?

• current that runs in the opposite direction of a larger current

• giant rotation of water

• spinning water caused by two currents

• amount of salt in water

What is a synonym for velocity?

• time

• weight

• speed

• distance

Dirt that is moved around by currents is called what?

• velocity

• transference

• whirlpool

• sediment

What does the word sustain mean?

• support

• transfer

• copy

• neglect

What is the name of the imaginary line that runs through Earth from the North to the South pole?

• Gulf Stream

• rotate

• axis

• equator

Which word has a suffix that shows it is related to melody?

• melodic

• melon

• melodeon

• melodrama

Which word best fits in this sentence?

The batteries provided ___________ power for the toy.

• electronically

• electronics

• electrician

• electrical