Show:
Earth
Moon
Sun and Stars
Seasons And Investigations
Stars
100

The Earth is tilted on an imaginary line called its ____.

axis

100

The moon rotates around what?

The Earth

100
The sun appears to rise in the _____ and set in the _____.
east, west.
100

When it is summer in the Northern Hemisphere what season is the Southern Hemisphere experiencing?

Winter
100

Why can't we see stars in the daytime if we know they are in the sky?

The sun is too bright and we can not see them. 

200
How long does the Earth take to revolve around the sun?
About 365 days or 1 year.
200

How long does the moon take to orbit the Earth?

About 28 days or 1 month.

200

Why does the sun appear to be the largest and brightest to us on earth?

The sun is the closest star

200
If you want to make sure your investigation about what you can see at night and what you cant is accurate, what rules should you follow?

Observations are same each week and at the same spot

200

Why do some stars seem smaller and less bright than others?

Because of their distance to the Earth

300

What causes day and night?

Earth's rotation.

300

Why can you see the moon and the sun at the same time once in a while?

The moon revolves around the earth and there are times that the sun and moon are aligned
300

You are standing outside talking to a friend in Africa. It is nighttime there. What must happen for the sun to be seen in Africa?

Earth must revolve around the sun. 

300
What causes the seasons?
The Earth is tilted on its axis which causes different parts of it to receive more direct sunligh than others as it revolves around the sun.
300

Why can't Xenia see Orion in the sky on a dark winter night?

Orion is a summer constellation and can not be seen because of where the Earth is in orbit.

400
If the Earth rotated faster than it does now, would our days and nights be longer or shorter?
Shorter
400
Explain why the moons appears to be lit up.
It reflects the sun's light.
400

Why is the sun the only star we see during the day?

The sun's light is too bright and does not allow us to see the other stars light.

400

Laura goes outside everyday around Noon. Where is the sun and explain. 

Right up above. 

400

Sera says that we can always see the same stars int he sky EVERY night of the year. Is she correct? Why or why not?

Earth moves around the sun and its position in space changes. It faces different directions so stars are seen at different times of year. 

500

What is another word for revolution of Earth?

orbit

500

Why would the sun and moon look the same size?

The sun is larger but farther away.

500

What causes the rising and setting of the sun?

rotation of Earth

500

How would you support a claim that gravity always pulls objects towards the center of the earth?

Drop an object from many locations and observing how they fall. 

500

Why does the Sun, which is dimmer and smaller than other stars, appear so much larger and brighter than other stars?

Because it is closer to earth.