Earth
This causes the Earth's seasons.
What is the tilt of the Earth?
The word "solar" refers to this object.
What is the "sun"?
It takes this long for the moon to revolve completely around the Earth.
What is 29 days or about a month?
This keeps the Earth and moon in their orbits.
What is "gravity"?
This word describes the Earth spinning continuously.
What is "rotating"?
The shape of the Earth
What is a "sphere"?
The sun is a big fiery ball of gas called this.
What is a "star"?
Solar refers to the sun. This term refers to the moon.
What is "lunar"?
It takes this long for the Earth to complete on full rotation on its own axis.
What is 24 hours?
This imaginary line goes from the North Pole to the South Pole on which the Earth is tilted.
What is the "axis"?
The Earth takes this long to revolve around the sun.
What is 365 1/4 days?
The sun appears to rise in this direction.
What is the "east"?
This is the name of the Apollo mission to safely land on the moon in 1969.
What is Apollo 11?
This object is used to study far away objects in the sky.
What is a "telescope"?
This term is used to describe the phase of the moon when we see all of the lit side.
What is "full moon"?
When it is winter in North America, it is this in Australia.
What is "summer"?
This occurs when the moon moves between the sun and the Earth, blocking some the the sun's light.
What is a "solar eclipse"?
During this process, the moon moves through the Earth's shadow, and cannot be seen for a short time.
What is a "lunar eclipse"?
The sun appears higher in the sky during this time of year because of the tilt of the earth.
What is "summer"?
This term means equal amounts of day and night.
What is an equinox?
The imaginary line horizontally around the middle of the Earth.
What is the "equator"?
The sun appears to be lower in the sky during this time of year in the Northern hemisphere.
What is winter?
The moon affects this part of the Earth, changing it daily on our beaches.
What is the "ocean tide"?
We have this special day every 4 years in February because it takes the Earth 365 and 1/4 days to revolve around the sun.
What is "Leap Year Day"?
This means the first day of either summer or winter and marks the longest and/or shortest day of the year.
What is a solstice?