18.2 Hydropower & Ocean Energy

Question 1

Wave energy is derived from

Answer 1

Wind

Question 2

Tidal energy is derived from

Answer 2

moon

Question 3

Multiple Turbines are called a

Answer 3

Wind farm

Question 4

Hydro Power:

Answer 4

The use of kinetic energy from moving water in order to turn turbines & generate lectricity

Question 5

The US draws the ___energy from hydropower

Answer 5

most

Question 6

The US recieves __% of energy from hydropower

Answer 6

6%

Question 7

Germany recieves __% of energy from hydropower

Answer 7

3.5%

Question 8

2 default ways of harnessing a river for hydropower

Answer 8

-Dam blocks river, water builds up

-river isn’t blocked yet, energy is still made from the natural movement of

Question 9

Reson for Hydropower;s unlikelyness to grow

Answer 9

Most major rivers in the world have already been dammed

Question 10

Function of a dam-hydropower

Answer 10

1. Flowing water spins a turbine
2. Causing a genertor to create electricity
3. Resoivors provide a steady supply

Question 11

Hydropower Benefits

Answer 11

-renewable
-no pollution of air
-relatively inexspensive
-dams can control floods
-very helpful in nations with many rivers

Question 12

Hydropoer Disadvatages

Answer 12

-dams drastically effect ecosytems
-may reduce animal populations
-potenial landslides
-can trap helpful natural sediment from reaching downstream

Question 13

4 countries that receive 50% of energy via hydropower

Answer 13

Canada
Brazil
Norway
Venezuela

Question 14

Tidal Energy:

Answer 14

Using movement of tidal water to generate electricity

Question 15

2 main ways to generate tidal energy

Answer 15

1. A dam is built across a bay or river, water rises and moves through dam, into bay; water receding passes through turbines

Question 15

2 main ways to generate tidal energy

Answer 15

1. A dam is built across a bay or river, water rises and moves through dam, into bay; water receding passes through turbines
2. A concrete box is built apon the ocean and water will rise up through to the turbines

Question 16

Heat from the earth’s equator could be harness for

Answer 16

20,000 times th electricity used in the US