6.4: Renewable Energy Sources

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Disclaimer: This session will be recorded for learning purposes.Learning purposes include: a lesson review for students
who are absent, students who want to review for a test, etc.

Today’s Tasks

Have you

completed the
Unit 5Test in
Formative?

TODAY IS:

Friday

12/2/22

Participation

OMS Work

★ Join today’s

Quizizz

★ Begin Renewable

Resources
Exploration
Activity

★ Complete at

least 70% of
today’s Quizizz!

★ Read Lesson Text 6.4

★ Formative - begin

Renewable Resources
Exploration Activity

★ Optional:

○ More Practice
○ Student Guide

BE KIND!!!

Please email me if

you have any
questions or
concerns!!!

Slides Saver link
in Newrow Notes

and OMS!!!

Important Information

Multiple Choice

Which organism receives the least amount of energy from the producer?

• Owl

• Grasshopper

• Lilypad

• Mouse

Multiple Choice

Rabbits introduced into Australia over 100 years ago have become a serious pest to farmers. Rabbit populations increases so much that they displaced many native species of plant eaters. What is the most logical explanation for their increased numbers?

• Rabbits have a high death rate.

• There are few effective predators.

• Additional rabbit species have been introduced.

• There is an increase in rabbit competitors.

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6.4:
Renewable Energy
sources, Part 1

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SWBAT: I can describe the advantages
and challenges of solar and wind power.

Vocabulary

Analemma: the asymmetrical figure-eight curve that can be
traced in the sky at a given place showing the position of the sun
at the same standard time (usually twelve o'clock) on successive
days of a year.
Photovoltaic cells: an electronic device that converts the energy
of light directly into electricity
Noise pollution: harmful or annoying levels of noise, as from
airplanes, industry, etc.

●8.P.2 Explain the environmental implications associated with the various methods of obtaining, managing and using
energy resources.

○8.P.2.1 Explain the environmental consequences of the various methods of obtaining, transforming, and distributing
energy.

○8.P.2.2 Explain the implications of the depletion of renewable and nonrenewable energy resources and the
importance of conservation.

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SOLAR ENERGY

● Solar energy harnesses the power of the sun
● 7.6% of all electricity in NC

Advantages

● Free
● Unlimited supply
● Non-polluting

Disadvantages

● Equipment can be expensive
● Supplemental heating and storage unit needed

when sun is not out on cloudy or rainy days

● Long term storage of energy for later use is not

easy or cost effective

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

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WIND ENERGY

● Generating electricity by using wind to turn turbines

○ 0.4% of all electricity in NC

Advantages

○Creation of jobs

○ Relatively safe

○ Cost-effective

○ Works well in different

settings

Disadvantages

○ Unpredictable and unavailable in

some regions

○ May produce noise pollution and

not visually appealing

○ May disrupt TV and radio reception

○ May impact wildlife including birds

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

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Breakout Rooms

1. You may work independently or in groups of 2-3 and may switch

rooms.

2. Failure to work appropriately will result in your removal from the

BOR and contact to your LC. Please do not misuse BORs.

3. Go to Lesson 6.4 to access the link for the Formative - Renewable

Energy Exploration Activity - put your answers directly in the
Formative!

4. You will complete ALL five activities over the next two days

5. Please raise your hand if you need assistance, but be patient!

6. When completed, you may work on any optional assignments so

you can get your time in for this class!

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Goals for completion

● Lesson 6.4 in the OMS

○ Lesson Text
○ Formative - begin Renewable Energy Exploration

Activity - must complete all activities! Put your answers
directly in the Formative! This is not DUE today and you
will have time in class to complete it tomorrow!

● Have you complete all previously opened Formatives???
● ALL FORMATIVES CLOSE PERMANENTLY ON FRIDAY,

DECEMBER 9 AT 11:55 PM

● ALL OTHER ASSIGNMENTS CLOSE ON THEIR END DATES