Beyond a shadow of a doubt!
What is a shadow?
A. A light area behind an opaque object
B. A dark area behind an opaque object
B. A dark area behind an opaque object
Which time of the day are shadows the shortest?
noon
Will a shadow be longer at 8 am or at 11 am?
8 am
How long does it take for the Earth to make one complete rotation?
24 hours or 1 day
How long does it take for the Earth to make one full revolution around the sun?
Is your shadow long or short at sunrise?
Long
Which day of the year is the sun at its lowest noon position in the sky?
A. December 21 B. June 21 c. March 21
D. September 21
A. December 21
What type of object will cast a shadow?
An opaque object
How can you tell it is morning by looking at your shadow? (give 2 reasons)
is is long and facing west
What does the Earth do that causes us to have a day and night?
The Earth rotates (spins) on its imaginary axis.
Which direction does your shadow face at sunrise?
West
True or false – The sun appears higher in the sky during the summer.
TRUE
True or false - The sun appears lower in the sky during the winter.
True
How would day and night be affected if Earth did not rotate?
Half of the Earth would always be in daylight and the other half would always be in night.
What are two main reasons for the seasons?
Earth tilt and Earth revolution around the Sun.
Why does your shadow face west at sunrise?
Because the Sun is in the East
Which direction do shadows face just before sunset?
East
In which direction does the sun rise?
East
What does planet rotation mean?
The planet spinning on its imaginary axis
What determines the length of a year on Earth?
A. Revolution time
B. Rotation time
A. Revolution time.
Name the two times of the day when your shadow is the longest.
At sunrise and just before sunset
What causes shadows to change size and position throughout the day?
The Earth is rotating on its axis.
How do you know that the Earth rotates counter clockwise?
Because the sun appears to rise in the East and set in the West.
What does a Planet's revolution mean?
The planet's orbit or circling around the Sun.
Why is it possible for a day on a different planet to be longer or shorter than a day on Earth?
Example: 1 day on Venus is 116 days and 18 hours.
Because other planets can have a faster or slower rotation time.