Transcript Seasons powerpoint

Where would the Sun be on your birthday?
Complete this statement!
When the Sun is _________________________ it is
summer, and when the Sun is
____________________________ it is winter?
Which of these are true and which
are false and what evidence is there
to support your answer?
•
Earth is closer to the Sun in summer than it is in the
winter.
•
When it is summer, the Sun is giving off more energy
and when it is winter the Sun is giving off less energy.
•
When it is summer, more sunlight reaches Earth than it
does during the winter.
When the Sun is high in the sky during the day, the
number of daylight hours is greater and the amount of
direct sunlight received is greater. This results in
Summer.
When the Sun is low in the sky during the day, the
number of daylight hours is less and the amount of direct
sunlight received is less. This results in Winter.
The tilt of Earth’s axis of rotation
produces longer (or shorter) hours
of more (or less) direct sunlight
The tilt of Earth’s axis of rotation produces longer (or
shorter) hours of more (or less) direct sunlight
Which positions (1, 2, 3, or 4) correspond with which
seasons (fall, summer, spring, winter) for the northern
hemisphere?
What about the southern hemisphere?
1
4
2
3
The tilt of Earth’s axis of rotation
produces longer (or shorter) hours of
more (or less) direct sunlight
What are the possible dates for positions
1, 2, 3, and 4?
1
4
2
3
The tilt of Earth’s axis of rotation
produces longer (or shorter) hours of
more (or less) direct sunlight
Lecture Tutorial (Handout):
Seasons
• Work with a partner!
• Read the instructions and questions carefully.
• Discuss the concepts and your answers with
one another.
• Come to a consensus answer you both agree
on.
• If you get stuck or are not sure of your answer,
ask another group.
• If you get really stuck or don’t understand what
the Lecture Tutorial is asking, ask one of us for
help.
Looking at the images below, which letter (a-e)
best represents winter in the United States?
Sunlight
Sunlight
a
c
d
2
3
b
Sun
Note: this drawing is not to scale. In fact you could fit more than 11,000 Earths between the Sun and the Earth.
e
Which of the locations identified with an “x” for each of the
situations (A – E) would experience the coolest temperature over
the course of one day?
1.
2.
3.
4.
5.
A
B
C
D
E