Transcript 2.3SolarEnergy

2.3 DO NOW
Take 5 minutes to SILENTLY complete the do now. Remember to
write 2.3, your name and the date.
1.
How many Earths do you think would fit inside the
Sun?
2.
How hot do you think the Sun is?
3.
How much longer do you think the Sun will last?
4.
What motion gives us seasons? What motion gives us
night and day?
5.
How are tides caused?
6.
Explain Kepler’s 3rd law.
Answers!
1. 1 million (1,000,000!) Earths!
2. 10 million° F!
3. About 7 billion more years
4. Revolution around the Sun; Rotation on it’s axis
5. Earth’s rotation and the moon’s gravitational
pull
6. Kepler’s 3rd law states that the farther away the
planet is from the sun, the longer the revolution.
2.3 Fission and
Fusion
TSW explain how the sun produces energy
to the Earth by radiation by comparing
and contrasting fission and fusion.
EQ: Why does the sun shine?
The Sun
What do you know?
You have 1 minute to write everything you
know about the sun.
Now find 3 people and get more
information about the sun!
The Sun
A large star made out of gas and plasma
that provides all the energy necessary to
sustain life on Earth.
Where is the Sun in our galaxy?
What is the relationship between
the Sun and Earth?
•The Earth makes an ellipse around the Sun
every 365 days.
•The Sun gives us day and night, the
seasons, time, food, water, and air.
So… Why does the sun
shine?
Inside the Sun: A Deeper Look
http://www.youtube.com/watch?v=TOErr4xnt
HE&feature=related
Answer these questions:
1. What is the sun made out of?
2. How many earth’s can fit inside the sun?
3. How much power does the sun produce?
4. How does the sun generate it’s energy?
#3.20 Aim:
How does
the sun
make
energy?
Fusion
1.
The sun
Agenda
QOD (5)
turns
hydrogen
Lesson:
solar
into
helium
power
(15)
Activity:
passive
3.and
The
active
conditions
solar (15)
need
to be VERY
Summary
dense
and high
(5)
temperatures.
HW #27
2. The
masses
come
together to
produce
energy.
4. Fusion
produces 4
times more
energy than
nuclear fission.
Ex. Hydrogen
Bomb.
Fission and Fusion Comparison
You will be split into TWO groups:
Fission or Fusion
Using the information provided explain the
benefits of your group, and the
disadvantages of the other group to our
atmosphere.
We will debate!!
Exit Ticket
Write a paragraph (5 sentences)
distinguishing the similarities and
differences in fission and fusion.