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HOS quiz 3
matter and size
Terms in this set (24)
farther objects look smaller, closer objects look larger
What pieces of information do you need in order to estimate the apparent size of an object?
1.Distance to the closer object
2. Distance to further object
3. Width of closer object
4. Width of further object
The moon's distance from the Earth is about
110 moon diameters
The diameter of the sun is____ times the diameter of the Earth.
the sun is _________________ away from the Earth
110 sun diameter
how much larger is the Earth than the moon?
4 times as large
how much larger is the Sun than the Earth?
100 times as large
What two group can our planets be split into
- Jovian (gaseous and outer planets)
- Terrestrial (Rocky, inner planets)
Which planets are terrestrial?
Mercury, Venus, Earth, Mars
which Planets are jovian?
Jupiter, Saturn, Uranus, Neptune
terrestrial planet characteristics
High density, small, rocky, no rings, 0/2 moons, thin atmosphere, closer to the sun.
Jovian planet characteristics
Composed of gas, very large, not dense, thicc atmosphere, high mass, rings, many moons, further from the sun
a small, icy rock that orbits as part of the solar system
large spherical object that orbits a star(s)
large ball of gas that is so massive it pulls things around it into orbit.
one or two suns and all of the objects that orbit around it
giant cloud of dust and gas from which stars are born (in the shahaaashaaalowww), usually contain dozens of stars
a densely packed cluster that typically contains about 100 stars
Nebula v. globular cluster
these two are roughly the same size, however, globular clusters are more densely packed with stars than nebulas.
gravitationally bound system of hundreds of billions of stars and their solar systems, nebulas, and globular clusters
a type of galaxy that is frisbee shaped, that has spiral arms made up of gas and dust
shaped like an egg or watermelon; composed of only stars and no gas
clusters of galaxies
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