Earth
This causes the Earth's seasons.
What is the tilt and revolution of the Earth?
This is the amount of matter in an object
What is mass?
During this phase of the moon, we can see no light from the moon.
What is a "new moon"?
This is when the moon appears as a full circle in the sky.
What is a full moon?
What causes day and night?
What is Earth's rotation on its axis?
When it is winter in North America, it is this in Australia.
What is "summer"?
This is a measurement of the force of gravity on an object.
What is weight?
It takes this long for the moon to rotate on its axis.
What is 29 days?
This is when the part of the moon that is visible in the sky is great than half a circle.
What is a gibbous?
This is what would happen to the force of gravity between the Earth and moon if the earth's mass decreased.
What is "it would decrease"
These are the longest and shortest days of the year.
What is solstice?
These are the 2 factors that affect the force of gravity between 2 objects.
What is the mass of the objects and the distance between them?
The reason we don't ever see the dark side of the moon is this:
What is, "its revolution rate is equal to its rotation rate"?
Starting at home plate (new moon), the next moon phase to the right (the second one)
What is waxing crescent?
These are the 2 days each year when there is equal day and equal night
What is "equinox"?
This is the movement of the Earth on its axis
What is rotation?
This is the tendency of an object to resist change in motion.
What is inertia?
During this phenomenon, high tides are at their highest, and low tides are at their lowest.
What is a spring tide?
This word describes a moon phase where the portion on the moon we can see is shrinking.
What is waning?
This is what would happen to your weight if you went to a planet with less mass (like Mercury)
What is "it would decrease"
This is how long it takes the Earth to revolve around the sun.
What is 365.25 days
These are the 2 factors that keep the moon in orbit around the sun.
What are inertia and gravity?
This is the position of the Earth, moon and sun during a lunar eclipse.
What is sun, earth, moon
This occurs only during the full moon phase when the moon dips down into the Earth's shadow.
What is a lunar eclipse?
This is how inertia affects an empty grocery cart versus a full shopping cart.
What is the full grocery cart is harder to stop and start, the empty grocery cart has less inertia and is easier to stop and start.