ESS2.2 Day 2

​​ESS2.2 EQ:

How does the Sun’s energy and differences in salinity drive ocean currents and shape global water movement?

​Engage:
Think back what you learned about density.
What does the egg in salt water have to do with density?​

Open Ended

Explore:

Use the term density (dense) to explain how the salt causes the egg to float.

​Let's read page 11.

​Based on the video:

How does salinity affect the movement of the ocean?

Early Look: How do ocean currents affect climate?​

​Let's break this down:

​Let's complete together:

​Elaborate:

Multiple Choice

Evaluate: What statement best describes the flow of ocean currents?

• What statement best describes the flow of ocean currents?

• Cold currents tend to flow under warm currents

Multiple Choice

How does salinity relate to density?

• Increasing salinity increases density

• Decreasing salinity increases density

Multiple Choice

How does temperature relate to density?

• As temperature increases density increases

• As temperature decreases density increases

Multiple Choice

Movement of ocean currents is caused by

• Temperature and salinity

• Density and plate tectonics

Multiple Choice

What type of heat transfer is happening in this picture?

• Conduction

• Convection

• Radiation