Sun & Shadows - 1
How long does it take the earth to travel one complete orbit around the sun?
365 1/4 days
If your shadow is pointing east, where is the sun?
The sun would be in the west if the shadow is pointing toward the East.
What does revolution mean?
Revolution is the Earth's movement around the sun.
How many hours does it take the earth to make one complete rotation?
24 hrs
In what direction does the sun rotate in the sky?
North to South, West to East, East to West, South to North
East to West
What is the reason shadows change length throughout the day?
The rotation of the Earth
What does rotation mean?
Rotation is the spinning of the Earth on its axis from east to west.
The earth rotates counterclockwise from _______ t0 _____.
west to east
Which objects will cast a shadow and why?
a) transparent b) opaque c) translucent
b.) opaque
Opaque objects will cast a shadow because light cannot go through them.
True or False: Your shadow will be the shortest at noon.
True - Your shadow will be shortest at noon because the sun is directly overhead and will cast the shortest shadow of the day.
What are the reasons for the seasons? Name two
The tilt of the earth's axis and the revolution of the earth around the sun.
What is "day"?
Day is the half of the Earth's surface being illuminated by sunlight.
What causes the length and direction of shadows?
The sun's position in the sky. As the sun moves across the sky, shadows change direction and length.
Describe what the shadow of a tree would look like when the sun is setting.
The shadow was be the longest of the day.
What is night?
Night is the half of Earth's surface in its own shadow.
What causes the cycle of day and night?
The Earth rotating on its own axis causes day and night.
True or False
The Sun revolves around the Earth
False!
The Earth revolves around the sun.
What is a shadow?
A shadow is a dark area that result when light is blocked by an opaque object.
True or False
The sun appears to move across the sky from east to west.
True - The sun appears to move across the sky from east to west. We know, however, that it is the Earth that is rotating and revolving.
If the sun is low on the horizon in the west, what time of day is it?
It is late afternoon because the sun rises in the east and sets in the west. As the sun sets in the west, the shadows (which are in the east) get longer.