Day and Night
How do we get day and night?
The Earth is spinning, or rotating, on its axis
Are constellations moving in the sky?
No, the stars do not move in the sky.
When are shadows the longest?
The shadows are longer when the sun is lower in the sky. (morning and evening)
Do stars move? Do planets move?
No, stars do not move. Planets move around the sun.
True or false? Gravity is a force that pulls you down.
False
When it is day time here in the United States, what is it like on the other side of the world in China?
It would be night time.
Can we see every constellation in the sky during one night?
No, because the constellations are not moving and positions in the sky throughout our galaxy. Only certain times of the year can you see the constellations because you are below them.
When are shadows the shortest?
At 12pm, noon, when the sun is right above an object.
Is the sun the brightest star in our galaxy?
No there are other stars that are brighter. The sun is the closest, that's why it looks the brightest.
What is gravity pulling objects toward?
It's the force that attracts objects toward the center of the earth.
How long is one day on Earth? (Be VERY specific.)
Why can we not see constellations during the day?
The Sun's light blocks us from being able to see them.
The sun rises in the ______ and sets in the _______.
The sun rises in the east and sets in the west.
The Sun is _______ to the Earth than other stars and so the Sun appears ______ than any other star in the sky.
closer
bigger and brighter
Which planet would have more gravity? Saturn or Earth?
Saturn. It is larger than Earth.
The sun always rises in which direction?
East
365 1/4 days
Why does the sun appear to move across the sky each day?
The earth is rotating on its axis.
If there are two identical stars, one 20 lightyears away and one 40 lightyears away, which star would look bigger and brighter? Explain how you know.
The star that is 20 meters away will appear bigger and brighter. The closer the star is to Earth, it appears bigger and brighter.
True or false?
There is no gravity on the moon.
False. It just doesn't have as much gravity as Earth.
Who would see sunrise first? North Carolina (on the East coast) or California (on the West coast)?
North Carolina
We see certain constellations during specific seasons. How long does each season last?
3 months
If the sun is behind you, where would your shadow be?
In front of you.
Name another star that we learned about in this unit that is actually bigger or brighter than the sun, but it may not look it.
Examples:
Betelgeuse
Sirius A
Why don't people who live at the South Pole fall off the earth?
Gravity pulls them toward the center of the earth.