Term
What are inner planets?
What are outer planets? |
|
Definition
Inner planets are the four planets of the solar system that are closer to the Sun. They are Mercury, Venus, Earth and Mars.
Outer planets are the four planets of the solar system that are farthest from the Sun. They are Jupiter,Saturn, Uranus, and Neptune. |
|
|
Term
| What is a solar eclipse and a lunar eclipse? |
|
Definition
| Solar eclipse is an event where the Moon moves directly between the Sun and Earth, so that the Moon cats its shadow on part of Earth. Lunar eclipse is an event where the Earth moves directly between the Sun and Moon, so that the Earth casts its shadow on the Moon. |
|
|
Term
|
Definition
| Light shows in Earth's upper atmosphere created by solar wind. |
|
|
Term
|
Definition
| A shape or pattern of shapes in the night sky made by imagining that stars are joined together by make-believe lines. |
|
|
Term
|
Definition
| A collection of many billions of stars, plus gas and dust held together by gravity. |
|
|
Term
|
Definition
| A measurement equal to the distance that light travels in one year. (About 9.5 x 10 to the power of 12) |
|
|
Term
|
Definition
| The area of space that contains a planet's magnetic field. |
|
|
Term
|
Definition
| Chuck of rock, metal, or both that is shed from an astroid or comet. |
|
|
Term
|
Definition
| A massive ball of superheated gases that radiates heat and light. |
|
|
Term
|
Definition
| Everything that exists, including celestial objects; such as stars and planets as well as all the matter and empty space surrounding them. |
|
|
Term
|
Definition
| Is a rocky object, located in the region between the orbit of Mars and Jupiter, that orbits the Sun. Called an astroid belt. |
|
|
Term
| What is an astronomical unit |
|
Definition
| A measurement equal to the distance between the Sun and the Earth. |
|
|
Term
|
Definition
| Chunks of loosely held rock and ice that are thought to come from the outer region of the solar system. |
|
|
Term
|
Definition
| The circular path of one object around another object. |
|
|
Term
| What is gravitational pull? |
|
Definition
| The force of attraction that any two masses have for each other. |
|
|
Term
|
Definition
| The system of planets; including Earth, moons and other objects that orbit(revolve around) the Sun. Located inside a galaxy. |
|
|
