Sun's Properties
This star is at the center of our solar system.
What is the Sun?
This force keeps planets orbiting the Sun and moons orbiting planets.
What is gravity?
This historical model places Earth at the center of the solar system.
What is the geocentric model?
This phase occurs when the Moon is between Earth and the Sun.
What is New Moon?
During this type of eclipse, the Moon moves between the Sun and Earth.
What is a solar eclipse?
This layer surrounds the Sun and is its outer atmosphere.
What is the corona?
These two factors determine the strength of gravitational force between objects.
What are mass and distance?
This model places the Sun at the center, with Earth and the other planets orbiting it.
What is the heliocentric model?
During this phase, Earth is between the Sun and the Moon, and the Moon appears fully illuminated.
What is Full moon?
During this type of eclipse, Earth moves between the Sun and the Moon.
What is a lunar eclipse?
Energy moves through this layer mainly by radiation before reaching the convection zone.
What is the radiation zone?
When the distance between two objects decreases, their gravitational attraction does this.
What is increases / becomes stronger?
This structure contains billions of stars and may contain billions of solar systems.
What is a galaxy?
This word describes Moon phases when the illuminated portion visible from Earth is getting larger.
What is waxing?
This Moon phase is associated with a solar eclipse.
What is the new moon?
This solar feature is a large loop of glowing plasma that extends outward from the Sun.
What is a prominence?
Astronauts appear to float in orbit because they are constantly doing this around Earth.
What is free-falling?
This model better explains why planets sometimes appear closer to Earth and sometimes farther away.
What is the heliocentric model?
During this Moon phase, the right half of the Moon appears illuminated from Earth.
What is First Quarter Moon?
This is the darkest part of a shadow and is where a total solar eclipse can be seen.
What is the umbra?
In this layer of the Sun, hotter plasma rises while cooler plasma sinks, transferring energy toward the surface.
What is the convection zone?
A planet would travel in this type of path if the Sun's gravitational pull suddenly disappeared.
What is Forward?
A planet, its moons, asteroids, and other objects orbiting one star are all part of this larger system.
What is a solar system?
We see these changing appearances of the Moon because, as the Moon orbits Earth, we see different amounts of its sunlit half.
What are Moon phases?
A diagram shows the alignment Sun → Earth → Moon, and the Moon moves into Earth’s shadow. Name the event and the Moon phase associated with it.
What is a lunar eclipse during a full moon?