Shadows
Give an example of something that can have a shadow.
How long is one rotation of earth on its axis?
24 hours
How does the sun's position in the sky change over 1 day?
Sun will rise in the east and appear to be moving west, where it will set.
What does opaque mean?
light cannot travel through
you cannot see through it
Pointing towards other whiteboard
In the morning, shadows will be long. In the afternoon, around 12, the shadows will be short. Finally, in the evening before the sun sets, shadows will be long again.
How much of the earth is day vs night? WHY?
1/2 of the earth will have day 1/2 the earth is night
This is because since the earth rotates, only half the earth is ever facing towards the sun/away from the sun
Is the sun higher in the sky on June 21st or December 21st?
What is a shadow?
A shadow is a dark area caused by the sun and an opaque object.
What direction does the earth rotate in?
counter clockwise
WHY?
If you are in China, where does the sun rise?
THE EAST...always!
The sun is always on the opposite side of the shadow
What is horizon?
the line where earth's surface/sky seem to meet
What do you need in order to have a shadow
an opaque object and a source of light
What time is it....
A shadow is pointing west and is long.
Early morning.
Does the sun rise in the morning all over the world?
If the sun is higher in the sky, is your shadow long or short?
short
Why do the shadows change? USE A CLAIM SENTENCE
I claim that shadows change because sun's position in the sky appears to change
Draw a model demonstrating what happens to cause day and night
look at the model