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22 terms

Earth and Space

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Ellipse
a circular shape that looks like a narrow or flattened circle.
Axis
an imaginary line that passes through Earth's center and its North and South Poles.
Equator
an imaginary line around Earth equally distant from the North and South Poles.
Hemisphere
one half of the Earth.
Solar System
the Sun, all of the planets, and other objects that revolve around our Sun.
Moon
a body in space that orbits a planet.
Planets
spheres of different size that go around the Sun.
Reflect
sunlight bouncing off of a body in space, such as a planet.
Refraction
the bending of light.
Star
a huge ball of very hot gases in space.
Constellation
a pattern of stars, named after a mythological or religious figure, an object, or animal.
Universe
everything that exists, including such things as stars, planets, gas. dust, and energy.
Galaxies
huge gatherings of stars in space plus anything that obits the stars.
Moon Phase
the appearance the moon assumes in the sky, created by sunlight reflecting off of the moon's surface.
Lunar
having to do with the moon.
Asteroids
small planets that revolve around the Sun, some in a belt or band.
Light-years
distance light travels through empty space in one year, equals 5.878 trillion miles.
Sun
a medium sized star at the center of our universe.
Our Solar System
Sun, Mercury, Venus, Earth, Mars (asteroid belt), Jupiter, Saturn, Uranus, Neptune, Pluto (My Very Educated Mother Just Served Us Nine Pizzas.)
rotation
to spin on an axis
revolution
when Earth travels in a closed path around the sun.
orbit
the path one body takes in space as it revolves around another body.