Why do ocean water flow?

The movement of deep, cold, nutrient filled water to the surface of the ocean is..

• Ocean Current

• Upwelling

• Deep Currents

• Surface Currents

What affects the density of water?

• Salt

• Temperature

• The seasons of the year

• Both A and B

Why is upwelling important?

• Upwelling regulates ocean temperature

• Upwelling provides nutrient rich water that sustains life

• Upwelling controls the tides

• Upwelling helps sailors to navigate the seas

Two types of ocean currents are

• local and global
• sea and land
• surface and deep
• warm and cold

Currents that occur at or near the surface of the ocean are called 

• Deep Currents
• Convection Currents
• Surface Currents
• Wave Currents

Surface currents are mainly caused by

• The Coriolis Effect
• Cold and Warm Water
• Convection
• Wind

Water in the ocean is always

• Moving
• Still
• Warming up
• Cooling down

Air moves from _______ pressure to _______ pressure.

• Low, High
• High, Low
• Warm, Cold
• Cold, Warm

Upwelling provides _________ for many sea organisms.

• Water
• Nutrients
• Air
• Heat

Water + _______ = Currents

• wind

• heat

• light

• sound