Rewis Chapter 3 Part 2

Front 1

_______ power is the most common form of renewable energy.

Back 1

water

Front 2

About _% of the energy needs of the U.S. is hydroelectric energy.

Back 2

4%

Front 3

___________ are holding areas for water to control the flow of the water.

Back 3

reservoirs

Front 4

___________ energy is produced as water flows from reservoirs and turn turbines.

Back 4

hydroelectric

Front 5

The benefits of hydroelectricity:
1) 2) 3)

Back 5

1)great renewable resource
2)often used a recreation lakes
3)can be used as irrigation

Front 6

The disadvantages of hydroelectricity:
1) 2) 3)

Back 6

1)large areas of land must be flooded
2)needs a large lake
3)can impact people downstream

Front 7

______ energy uses heat from the earth to produce steam that is turned into electricity.

Back 7

geothermal energy

Front 8

Benefits of geothermal energy:
1) 2)

Back 8

1)inexpensive to build
2)no pollution produced

Front 9

The disadvantages of geothermal energy:
1) 2)

Back 9

1)steam can be polluted
2)only certain places have magma close to the earth's surface

Front 10

_________ ________ first appeared in the 1960s.

Back 10

wind farm

Front 11

_____________ energy uses air movement to produce electrical energy.

Back 11

wind

Front 12

Benefits of wind energy:
1) 2)

Back 12

1)do not cause pollution
2)very little maintenance

Front 13

Disadvantages of wind energy:
1) 2)

Back 13

1)must have place with a lot of wind
2)energy cannot be stored

Front 14

__________ energy uses the Sun's energy.

Back 14

solar energy

Front 15

Benefit of solar energy:
1)

Back 15

1) no pollution

Front 16

Disadvantages of solar energy:
1) 2) 3)

Back 16

1)expensive to build
2)large area of land needed
3) energy has to be stored

Front 17

________ is a solid substance found naturally in the earth.

Back 17

mineral

Front 18

Common minerals are:
1 2 3 4

Back 18

iron, salt, gold, diamonds

Front 19

A concentrated area of a specific mineral is called a ___.

Back 19

vein

Front 20

Veins of minerals are often found near ______.

Back 20

volcanic areas

Front 21

_______ is material with usable amounts of metal in them.

Back 21

ore

Front 22

________ is the process of separating metal from ore.

Back 22

smelting

Front 23

When smelting ore, the nonmetal part is called _____.

Back 23

dross

Front 24

_______ is a soft, shapeable metal considered very valuable.

Back 24

gold

Front 25

___________ means to be shapeable

Back 25

malleable

Front 26

________ is a malleable metal that is easy to scratch and tarnishes (turns black).

Back 26

silver

Front 27

_______ is necessary to make photographic film.

Back 27

silver

Front 28

________used for money, wiring and plumbing.

Back 28

copper

Front 29

_______ is a strong metal used to make tools.

Back 29

iron

Front 30

________ is a metal that is lightweight and strong.

Back 30

aluminum