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MadScience 1

Planets and Celestial Bodies Practice

QuestionAnswer
The basis for classifying celestial bodies Physical Properties
A small body of ice, rock, and cosmic dust loosely packed together A Comet
The reason comets have a tail Solar Radiation
What is an elliptical orbit? A stretched out (oval shaped) path
The primary difference between asteroids and meteorids Meteoroids are smaller
Small rocky bodies that orbit the sun and are larger than meteoroids Asteroids
Small rocky bodies that orbit the sun and are smaller than Asteroids Meteoroids
A meteoroid, or comet dust, that burns up in the atmosphere Meteor
A meteoroid that enters Earth's atmosphere and strikes the ground Meteorite
Small, dense, and rocky planets Terrestrial Planets
Large, outer planets that don't have any known solid surface Gas Giants
Objects that resemble planets but that aren't big enough to clear their orbital paths Dwarf Planets
The closest star to Earth The Sun
The closest star to the Sun Proxima Centauri
The third planet from the Sun Earth
The planet recently demoted to dwarf planet status Pluto
A natural satellite of a planet Moon
One of these is NOT a reason Earth can sustain life: -it is the perfect size -it has a protective atmosphere -it has liquid water -it is the perfect temperature it is the perfect size
Venus would not be a good place for Earth's inhabitants because of its: Atmosphere
The star above Earth's axis (the North Star) Polaris
The terrestrial planets, in order from the sun Mercury, Venus, Earth, Mars
The gas giants, in order from the sun Jupiter, Saturn, Uranus, Neptune
The asteroid belt orbits the usn between these two planets Mars and Jupiter
What makes a planet sphere-shaped? Gravity
What depends on mass and distance? Gravity
Uranus is a ____________________________. Gas Giant
Created by: MadScience
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