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Florida Science Fusion 5th Grade - Unit 2 Review (The Solar System and the Universe)

Terms in this set (15)

planet
A large, round body that revolves around a star.
solar system
A star and all the planets and other objects that revolve around it.
dwarf planet
A nearly round body, slightly smaller than a planet, whose orbit crosses the orbit of another body.
In our solar system, what is the shape of the planets' orbits around the sun?
elliptical
Name the dwarf planet that was once classified as a planet.
Pluto
Where is the asteroid belt?
between Mars and Jupiter
asteroid
A chunk of rock or iron less than 1,000 km (621 mi) in diameter that orbits the sun.
astronomy
The study of objects in space and their properties.
comet
A chunk of frozen gases, rock, ice, and dust orbiting the sun.
star
A huge ball of very hot, glowing gases in space that produces its own light and heat.
Which way does a comet's tail point?
away from the sun
universe
Everything that exists, including galaxies and everything in them.
water cycle
The process in which water continuously moves from Earth's surface into the atmosphere and back again.
galaxy
A group of billions of stars, objects that orbit those stars, gas, and dust.
What holds a galaxy together?
gravity
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