Vocabulary
When a planet "spins" in place on it's axis.
What is rotation?
Smallest planet in our solar system
What is Mercury?
We experience this when earth rotates once on it's axis.
What is a day and night?
This is a medium size ball of gas at the center of our solar system.
What is the sun?
A large round object that revolves around a star and clears the region around its orbit.
What is a planet?
When a planet moves around the sun.
What is revolution?
Only planet that supports life.
What is earth?
It takes this long for the earth to revolve one full orbit around the sun..
What is a year?
There are ___ layers to a star.
What is 3 (photpsphere, chromosphere and corona).?
A spacecraft that collects data.
What is a space probe?
The imaginary line going through the center of earth around which it rotates.
What is axis?
Largest planet in the solar system.
What is Jupiter?
The sun's ________ is what keeps the planets revolving in their orbits.
What is the sun's gravity?
An explosive eruption of waves and particles into space, like a volcanoe, from a star is know as this.
What is a solar flare?
A planet covered with iron oxide making it appear red.
Waht is Mars?
The path along which a planet revolves around the sun.
What is it's orbit?
These four planets (Jupiter, Saturn, Uranus and Neptune) fall under two catagories.
What are the "outer planets" and "gas giants"?
The seasons change as earth's axis tilts ________ or ________ from the ____ at different times during its revolution.
What is "toward" or "away" from the "sun"?
Groups of stars that form a pattern are called __________________.
What is a constellation?
Planet about the same size as earth but hottest planet.
What is Venus?
This is the shape of the planets orbits around the sun.
What is elliptical, ellipses or oval?
We are known as the inner planets.
What are Mercury, Venus, Earth and Mars?
This satellite orbits earth. Earth has one some planets have many.
What is a moon?
Polaris is another name for this star.
What is the North Star?
An object that orbits another object in space.
Waht is a satellite?