EARTH BASICS
What causes day and night?
Rotation
What causes seasons?
Earth’s tilt + revolution
What phase is NOT visible?
New Moon
What eclipse occurs when the Moon blocks the Sun?
What force keeps planets in orbit?
Gravity
What is the imaginary line Earth spins on?
Axis
Which area gets the most direct sunlight?
Equator
Why does the Moon have phases?
We see different parts of the lit half
What is a lunar eclipse?
Earth blocks the Moon
What object has the strongest gravity in our solar system?
The Sun
What divides Earth into Northern and Southern Hemispheres?
Equator
When it is summer in the Northern Hemisphere, what season is it in the Southern Hemisphere?
Winter
What phase is fully visible?
Full Moon
Why don’t eclipses happen every month?
Moon’s orbit is tilted
Stronger gravity from the Sun causes the Earth to do what?
Earth moves faster when closer to the Sun
Explain the difference between rotation and revolution.
Rotation = spinning;
Revolution = orbiting the Sun
Why is the equator warmer than other places?
More direct sunlight
What is the correct Earth-Sun-Moon order to see a full moon?
Earth is between Sun and Moon
When are tides the strongest?
When Sun, Earth, Moon are aligned
What holds stars together?
Gravity in galaxies
What action from the Earth would show a full day-night cycle in a model?
Spin Earth once
When the Northern Hemisphere is tilted away from the Sun, what season is it?
Winter
Why does the Moon look dark during a new moon?
Lit side is facing the Sun, not Earth
Why are high tides strongest at certain positions?
Alignment increases gravitational pull
What happens to motion when gravity increases?
Objects move faster