The partial or total blocking of one object in space by another
What is an eclipse?
100
A device built to observe distant objects by making them appear closer.
What is a telescope?
100
The study of the moon, stars and other objects in space.
What is astronomy?
100
A force that moves rocks and other materials downhill.
What is gravity?
100
The path of an object as it revolves around another object in space.
What is an orbit?
200
The darkest part of a shadow.
What is the umbra?
200
One of the different apparent shapes of the moon as seen from Earth.
What are phases?
200
The spinning motion of a planet on its axis.
What is rotation?
200
The amount of matter in an object.
What is mass?
200
The daily rise and fall of Earth’s waters on its coastlines.
What is a tide?
300
The part of a shadow surrounding the darkest part.
What is the penumbra?
300
A chunk of rock or dust in space.
What are meteoroids?
300
The movement of an object around another object.
What is revolution?
300
A push or a pull exerted on an object.
What is a force?
300
A tide with the least difference between low and high tide that occurs when the sun and moon pull at right angles to each other at the first and third quarters of the moon.
What is a neap tide?
400
The blocking of sunlight to Earth that occurs when the moon is directly between the sun and Earth.
What is a solar eclipse?
400
A large round pit caused by the impact of a meteoroid.
What are Craters?
400
An imaginary line that passes through Earth’s center and the North and South poles, about which Earth rotates.
What is an axis?
400
The force of gravity on an object.
What is weight?
400
A tide with the greatest difference between high and low tide that occurs when the sun and the moon are aligned with Earth at the new moon and the full moon.
What is a spring tide?
500
The blocking of sunlight to the moon that occurs when Earth is directly between the sun and the moon.
What is a lunar eclipse?
500
Dark, flat areas on the moon’s surface formed from huge ancient lava flows.
What is the maria?
500
The two days of the year on which the sun reaches its greatest distance north or south of the equator.
What is the solstice?
500
The tendency of an object to resist a change in motion.
What is inertia?
500
The scientific law that states that every object in the universe attracts every other object.