Gravity
This holds all the matter in the galaxty together
What is gravity?
This star is at the middle of our solar system
sun
This planet is tilted on its axis, revolves around the sun, and supports life
Earth
This action causes day and night
rotation
The most massive object in our solar system
sun
Gravity _______________ as mass increases.
increases
The inner planets are made of this type of material
When Northern Hemisphere is tilted towards the sun its this season
summer
This month gets an extra day every four years.
February
All the energy in our solar system originally comes from
the sun
Gravity ______________ as distance increases
The outer planets are made of this type of matter
gasses
When the Earth is neither tilted towards or away from the sun its this season
Spring or Fall
When one object makes a complete circle around another object. (Hint, the Earth does this around the sun)
revolve
The light from the sun (and all light) travels in __________ lines
straight
Which way does the sun's gravity vector point?
towards the middle of the sun
There are ____________ planets in our solar system
This object has a tilt in its orbit. Sometimes its penumbra causes an eclipse on Earth.
Moon
The moon is in this phase during a lunar eclipse
full
It takes this long for the light from the sun to reach the Earth
8
Everything that has ___________ has gravity
mass
This belt separates the rocky planets from the gas giants
asteriod
Its _____________ in the Northern Hemisphere when it ______________ in the Southern Hemisphere
summer / winter
winter / summer
The path an object follows as it revolves
orbit
Why does the sun look bigger than all the other stars we can see?
Because it is closer to Earth than any other star