3.1.3: Renewable Resources

Multiple Choice

Why is solar energy considered a renewable energy source?

• You can get money back from the government if you put solar panels on your house

• Solar energy is cheaper than fossil fuels

• The sun's energy will not run out for billions of years

• Solar energy can be used to recharge batteries

Multiple Choice

Someone wants to put solar panels on their house. They live in a location where it is cloudy a lot and their house is shaded by trees. Should this person be putting solar panels on their house?

• Yes

• No

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SOLAR
ENERGY

Two types:

● Passive solar energy

● Active solar energy

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THE SUN AND US –
Analemma & Tilt

The tilt of the Earth on its axis at 23.5˚ gives us our seasons
• Summer – northern hemisphere tilted toward the sun
• Winter – northern hemisphere tilted away from the sun

Analemma

Due to the Earth’s elliptical
orbit around the sun, the
sun sits lower in the sky
during the winter in the

Northern hemisphere

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PASSIVE SOLAR

ENERGY

●Takes advantage of

analemma and the tilt of
the Earth on its axis

●No mechanical devices

used

●Relies on the design and

construction of a home
○ South-facing windows to keep

house warm during the winter

○Roof overhangs to limit direct

sunlight into the house during
the summer

○Construction of home with high

thermal mass materials

●Nature does most of the

work!

Multiple Choice

Solar power for heating is passive when

• no mechanical components are used to move heat around

• there is no sun (at night)

• in winter

• some mechanical components are used to move heat around

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ACTIVE SOLAR ENERGY

● Uses mechanical and electrical

equipment to enhance the conversion
of solar energy to heat and electric
power

● Solar collector used to absorb solar

energy

■

Solar panels – photovoltaic cells
which directly convert light into
electricity

■

Must use a conductor (air or a
liquid) to store and transfer heat and
electricity

Multiple Choice

Solar energy can be converted into

• heat

• electricity and heat

• electricity

Multiple Choice

What type of energy does a wind farm exploit?

• Electricity

• Mechanical energy

• Thermal energy

• All otpions correct

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HOW DO WIND

TURBINES DISRUPT

RADIO SIGNALS

1. Blocking the signal

2. Reflecting the signal

3. Chopping the signal

Multiple Choice

What type of pollution do wind turbines cause?

• They pollute the air and the soil

• They do not pollute

• They produce noise and great visual impact

• They pollute water and soil

Multiple Choice

Hydroelectric power produces electricity using.....

• Wind

• Sunlight

• Moving water

• Dung

Multiple Choice

Is the fact that 'hydroelectricity is efficient and reliable' a advantage or a disadvantage?

• It is an advantage

• It is a disadvantage

• I don't know

Multiple Choice

Is energy produced by heat from the Earth's interior. It heats rock formation deep within the ground, the groundwater absorbs this heat and forms hot springs and geysers where the water reaches the Earth's Surface.

• Geothermal Energy

• Hydroelectric Energy

• Fossil Fuel

• Nuclear Energy

Multiple Choice

Is organic matter from plants and animal waste that contains chemical energy. Burning releases the contained chemical energy to provide energy for cooking food, warmth, and power engines.

• Solar Energy

• Biomass

• Wind Energy