Lesson 5: Waves and Currents
Think about the difference between a wave and a current. Do you think boats are dependent on waves or currents? Why? Can you think of ways that ocean organisms might be affected by waves and currents?
Questions to Discuss
- What causes currents? (The wind, the Sun, and the rotation of the earth impact currents.)
- What makes a wave crash? (Near the beach the water gets more shallow so the bottom of the wave starts to lose speed and drag along the ground while the top of the wave is still moving quickly. Eventually the wave curls over itself and breaks.)
Things to Review
Review the fact that waves are energy and discuss the difference between waves and currents. Ask your child if he can think of ways waves and currents might affect ocean organisms.