moon
earth
stars
space
earth 2
100
moon's gravitational pull
What causes ocean tides?
100
light-years
__ is used to measure distances ion space.
100
mass
how long a star lives depends on__.
100
gravity
What is the force every object in the universe exerts on every other object in the universe?
100
Venus
What planet is the closest size to Earth?
200
moon blocks sunlight from reaching Earth
describe an eclipse of the sun.
200
tilt on the Earth's axis
What causes seasons?
200
moon blocks sunlight from reaching earth.
describe a solar eclipse.
200
solar system
all the planets, the sun, and Earth make up our__.
200
24 hours
How long is earth's rotation on it's axis?
300
sunlight cannot reach the moon
describe a lunar eclipse.
300
core, inner core, outer core, crust
draw and label earth.
300
brightness, tempurature, and age
What does a stars color indicate?
300
lunar eclipse
What happens when Earth is in a direct line between the sun and moon?
300
core
What is the very center of Earth?
400
full moon
What moon phase occurs when moon is on the same side of Earth as the sun?
400
changing positions of the sun, moon and Earth
What is the relationship between the tides on earth and the phase of the moon?
400
it is the same size
how is the sun like all other stars?
400
milky way
what galixy do we live in?
400
70%
___% of Earth is covered in water.
500
new moon, waxing crescent, first quarter, waxing gibbous, full moon, waning gibbous, third quarter, waning crescent
draw and label each phase of the moon.
500
cold winters and mild summers
Then hemispheres of Earth that are tilted on th axis away from the sun generally have___.
500
core, sunspot, prominence, convection zone, corona chromosphere, solar flare, radiation zone, & protosphere
draw and label the sun.
500
light-years
Astronomers use special units to describe distances in space called___.
500
troposphere
What layer of Earth contains oceans?
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