How long does the revolution of the moon around the Earth take?
About 28 days
100
How long does the rotation of the Earth take?
24 hours.
100
How do the hours of sunlight compare from summer to winter?
There are more hours of sunlight in the summer (15) and fewer in winter (about 9).
100
What is special about the far side of the moon?
We never see it from Earth.
100
When all colors of light are mixed, what color do we see?
White.
200
If you watched the night sky for several hours, how do the stars appear to move?
Around Polaris or the North Star.
200
What causes the phases of the moon?
The amount of reflected light as seen from Earth as the moon revolves around the Earth.
200
Why does the Earth experience seasons?
Because of its tilt.
200
How long does it take the moon to make a revolution? A rotation?
About 27-28 days for both.
200
What do lenses and water do to light?
Refracts it.
300
Describe a lunar eclipse.
The Earth makes a shadow on the moon during a full moon.
The Earth is between the sun and the moon.
300
Which has a predictable orbit - comets, asteroids, or meteoroids?
Comets.
300
When is the summer solstice?
Around June 21.
300
Why does the moon revolve around the Earth?
Because of Earth's gravitational pull and Newton's law of motion - if something is moving it wants to stay moving.
300
How does light travel?
In a straight line.
400
Why do the sun and moon appear as if they are moving across the sky?
Because of Earth's rotation.
400
What units of measure to we use to measure distances in our solar system?
Astronomical units.
400
How does the angle of sunlight change during the seasons?
The sun is at a lower angle during the winter - not so high in the sky.
400
What are the four main phases of the moon?
New moon, first quarter, full moon, third quarter.
400
What happens to light particles when light hits an uneven surface?
Light is scattered in many different directions.
500
What is the difference between a rotation and a revolution?
A rotation is a body spinning on its own axis;
a revolution is a body going around another body.
500
What shape is Earth's orbit around the sun?
It is a nearly circular ellipse.
500
How does the length of shadows change during seasons?
Longer in the winter, shorter in the summer.
500
Is the moon a light reflector or a light source?
Reflector, duh.
500
Compare translucent and transparent. Give examples.
Translucent - will allow some light to pass through - waxed paper, tracing paper.
Transparent - will allow all light to pass through - clear glass, clear plastic wrap.