TidesEW Chapter

4.2Pages 123-

126

Cause of TidesPage 123

• What are Tides?– Describe the 2 types of Tides.– What objects and force cause Tides?– Draw a picture of the location of the tidal bulges

like the one on Page 123.

Daily Tidal CyclePage 124

• How often do tides occur?• What factors affect the height of the tide?

Tidal Cycle124-125

• What is Spring tide?– Draw a picture of the alignment of the Earth,

Moon & Sun to illustrate.• What is Neap tide?– Draw a picture to illustrate.

Tidal Energy125-126

• Explain how tides can be used to create electricity.– Why is this system not always useful?

• If you were the captain of a ship, why would it be useful to know the time of the tides?