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40 Cards in this Set

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  • Back
solar system
a group of planets that revolve (orbit) around a star
a one-way trip
Going from point A to point B in one direction only... not returning back to point A
a satellite
an object that orbits around another object .
prior knowledge
facts and information on a topic that is known before a reader reads something new on that same topic
to revolve
to go around in an orbit
an orbit
a circular path around an object; the earth is in orbit around the sun.
to rotate
To turn in a circle around an axis. The earth rotates once every 24 hours.
an axis
Imagine a pencil piercing an apple all the way through the center of an apple. That pencil represents the axis of the apple.
a diameter
A spherical object has a diameter. The diameter is the distance that stretches from one side of a sphere (a round-shaped, 3D object) to the other side of the sphere.
a sphere
a round, 3D object
astronomy
the study of stars and planets
Earth
the planet on which we live
spherical
This describes an object that has a round shape and is three dimensional.
twinkle
a light that goes off and on rapidly
ozone
the layer in the atmosphere containing molecules wih three oxygen atoms.
asteroids
small, minor planets in our solar system
atmosphere
A mixture of gases that surrounds the Earth or any other planet.
ozone
the layer in the atmosphere containing molecules wih three oxygen atoms.
asteroids
small, minor planets in our solar system
atmosphere
A mixture of gases that surrounds the Earth or any other planet.
a solar wind
The movement of gases from the surface of the sun into outer space. Some of these gases travel all the way to the Earth.
a planisphere
a map of the sky that can show the positions of the stars at different times.
a pattern
AABAAB
ABCCABCC
yes yes NO yes yes NO yes yes NO

A pattern is a repeating visual or letter sequence.
a constellation
a group of stars taht forms a pattern in the night sky
a star
a huge globe of hot gases that shines by its own light
the 'morning' star
a very bright star that's only visible at certain times on the eastern horizon, just before the Sun rises.
the horizon
the line where the sky meets the earth
celestial object
any nonliving thing in outer space such as a planet, a star, a comet, a moon, an asteroid
the horizon
the line that forms the boundary between the sky and the earth
a constellation
a group of stars that form a pattern in space
a reflecting telescope
uses mirrors to see an object far away
gravity
a natural force that causes objects to move towards a planet's center
ozone
layer in the atmosphere containing molecules of three oxygen atoms
Jovian
adjective describing things related to JUPITER. example: There are sixteen jovian moons.
an orbit
A path followed by a planet around another object in space
twinkle
shining with a flickering, unsteady light
elliptical
an oval shape
stars
balls of gas that give off gas and light and heat
celestial body
any nonliving object in outer space such as a planet, a star, a comet, a moon, an asteroid
a refracting telescope
uses lenses to magnify an object