Vocabulary
Huge collections of gas, dust, and stars held together by gravity.
What is a galaxy?
The galaxy we reside in.
What is the Milky Way galaxy?
An attractive force between two objects that have mass.
What is gravity?
The reason early astronomers were not able to see Uranus or Neptune from Earth.
What is the planets are too far away to see without using technology?
Small, rocky particles that move through space.
What are meteoroids?
A star and everything orbiting it.
What is a solar system?
The difference between a cluster of galaxies and a supercluster of galaxies.
What is a super cluster is much larger and contains more galaxies than a cluster.
The two things that affect gravitational force.
What are mass and distance?
These planets are closer together than the gas giant planets.
What are rocky planets?
Meteoroids that pass through Earth's atmosphere, burning up and looking like streaks of light.
What is a meteor?
Mixtures of rock, ice, and dust.
What are comets?
The 3 types of galaxies.
What are spiral, elliptical, and irregular?
The affect of gravitational pull when 2 objects are closer.
What is stronger?
Some scientists think that planets get moons this way.
What is asteroids are pulled into planets' gravitational pulls and begin to orbit the planets?
A meteor that doesn't completely burn up and impacts the Earth's surface.
What is a meteorite?
Chunks of rock and ice that never clumped together.
What are asteroids?
The difference between solar systems and galaxies.
What is solar systems contain one star with objects orbiting it while galaxies contain many stars?
The affect of gravitational pull when 2 objects are further.
What is weaker?
Pluto is considered a _______ _________ because it does not have more mass than objects orbiting near it.
What is a dwarf planet?
The 5 objects found in a solar system.
What are planets, moons, dwarf planets, asteroids, and meteoroids?
A spherical object that orbits the sun and does not have more mass than objects in nearby orbits.
What is a dwarf planet?
A similarity between solar systems and galaxies.
What is both are held together by gravity and both have at least one star and objects that orbit that star?
The reason all objects don't orbit the sun.
What is objects that are far from the sun have a gravitational force that is too weak to orbit the sun?
We have these things as a result of space exploration.
What are satellite television, medical imaging, and home insulation?
The differences between asteroids, meteoroids, and comets.
What is asteroids are rocky, comets are icy, and meteors are much smaller?