Show:
Earth
Sun
Moon
This and That
Vocabulary
100
This causes the Earth's seasons.
What is the tilt of the Earth?
100
The word "solar" refers to this object.
What is the "sun"?
100

It takes this long for the moon to revolve completely around the Earth.

What is 27.3 days or about a month?

100

These two forces keep the Earth and moon in their orbits.

What are "Gravity & Inertia"?

100
This word describes the Earth spinning continuously.
What is "rotating"?
200
The shape of the Earth
What is a "sphere"?
200
These 2 things determine how strong a gravitational pull is. 

What are "distance and mass"?

200
Solar refers to the sun. This term refers to the moon.
What is "lunar"?
200
It takes this long for the Earth to complete on full rotation.
What is 24 hours?
200
This imaginary line goes from the North Pole to the South Pole of the Earth.
What is the "axis"?
300
The Earth takes this long to revolve around the sun.
What is 365 1/4 days?
300
The sun rises in this direction.
What is the "east"?
300
During this phase of the moon, we can see no light from the moon.
What is a "new moon"?
300
This object is used to study far away objects in the sky.
What is a "telescope"?
300
This term is used to describe the phase of the moon when we see all of the lit side.
What is "full moon"?
400

When it is winter in North America, it is this in the Southern Hemisphere.

What is "summer"?

400
This occurs when the moon moves between the sun and the Earth, blocking some the the sun's light.
What is a "solar eclipse"?
400
During this process, the moon moves through the Earth's shadow, and cannot be seen for a short time.
What is a "lunar eclipse"?
400

When the Sun's rays hit Earth at the highest point above the equator we experience this 'longest day'.

What is "summer solstice"?

400
As we see less and less of the lit part of the moon, we say that it is doing this.
What is "waning"?
500
The imaginary line horizontally around the middle of the Earth.
What is the "equator"?
500

The reason why it is usually cooler around the North and South pole.

What is "sun hits the surface at a steeper angle so heat is spread over a larger surface area."?

500

When the moon and Sun are aligned it creates this strong tide. 

What is the "spring tide"?

500

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"?

500

We are going to experience a Solar Eclipse on this day.

What is "October 14th"?