The sun and all the objects that are bound by gravitational force to the sun.
a. What is the solar system?
b. What is a constellation?
c. What is the law of universal gravitation?
What is the solar system?
100
A group of stars that, when seen from Earth, form a pattern.
a. What is a solar system?
b. What is a galaxy?
c. What is a constellation?
What is a constellation?
100
A celestial body that (1) is in orbit around the Sun, (2) is nearly round in shape, and (3) has cleared the orbit of other objects.
a. What is an asteroid?
b. What is a meteor?
c. What is a planet?
What is a planet?
100
The force of attraction between all objects.
a. What is gravitational force?
b. What is a solar system?
c. What is a tide?
What is gravitational force?
100
A cycle of rising and falling ocean levels.
a. What is the lunar cycle?
b. What is a tide?
c. What is a solar eclipse?
What is a tide?
200
An event that occurs when the Moon's shadow falls on Earth.
a. What is a solar eclipse?
b. What is a solar system?
c. What is an Astronomical Unit?
d. What is a tide?
What is a solar eclipse?
200
The cycle of change in the appearance of the Moon due to the positions of Earth, the Moon, and the Sun.
a. What is the Lunar Cycle?
b. What is a solar eclipse?
c. What is a tide?
What is the Lunar Cycle.
200
The object in our solar system that exerts the largest gravitational force one all other objects within the system.
a. What is Jupiter?
b. What is the Sun?
c. What is the Earth?
d. What is a comet?
What is the Sun?
200
This is the farthest planet from the sun. (Pluto is not a planet)
a. What is Jupiter?
b. What is Saturn?
c. What is Neptune?
d. What is Mercury?
What is Neptune?
200
This is the closest planet to the sun.
a. What is Venus?
b. What is Mars?
c. What is Mercury?
d. What is Neptune?
What is Mercury?
300
A chunk of burning rock traveling through Earth's atmosphere.
a. What is a meteor?
b. What is a meteorite?
c. What is a comet?
d. What is an asteroid?
What is a meteor?
300
The Greek astronomer who developed a model that explained the apparent path of the planets. He believed that the Earth was the center of the solar system.
a. Who is Galileo?
b. Who is Kepler?
c. Who is Copernicus?
d. Who is Ptolemy?
What is Ptolemy?
300
The imaginary line that passes through the center of a planet from pole to pole.
a. What is an axis?
b. What is a rotation?
c. What is a tide?
d. What is an orbit?
e. What is an Astronomical Unit?
What is an axis?
300
The amount of time it takes for a planet to complete one revolution around the Sun.
What is a year.
300
An object in space made mostly of ice and dust.
a. What is a comet?
b. What is an asteroid?
c. What is a meteor?
d. What is a meteorite?
e. What is a moon?
What is a comet?
400
The amount of time it takes for a planet to complete on revolution around the sun.
What is a year?
400
A natural satellite, orbiting another body, such as a dwarf planet.
What is a moon?
400
A scientific theory that explains how the Moon was formed.
What is giant impact theory?
400
An event that occurs when the Moon passes through Earth's shado.
What is a lunar eclipse?
400
An event that occurs when the Moon's shadow falls on the Earth.
What is a solar eclipse?
500
Equal to 150 million km, or the average distance from Earth to the sun.
What is an astronomical unit (AU)?
500
The inner planets, including Mercury, Venus, Earth, and Mars.
What are terrestrial planets?
500
A regular, repeating path that an object in space follows around another object.
What is an orbit?
500
The outer planets, including Jupiter, Saturn, Uranus, and Neptune.