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Ten Words A Week
the words on the ten words quiz
| Question | Answer |
|---|---|
| Black hole | a small, extremley dense object formed when a star remnant collapses |
| elliptical galaxy | a galaxy with an oval or near-spherical shape |
| Galaxy | a large group of stars, space dust, and gases that are held together by gravity |
| irregular galaxy | a galaxy that has neither a spiral nor an elliptical shape |
| light year | a unit of distance equal to the distance light travels in one year, or almost 9.5 trillion kilometers |
| luminosity | a measure of the energy output from the surface of a star per second |
| Milky Way Galaxy | the spiral galaxy to which our solar system belongs to |
| nuclear fusion | the joining of the nuclei of small atoms to form a larger stomic nucleus |
| spectroscope | a special telescope that can analyze visible light by acting like a prisom |
| spiral galaxy | a galaxy with "arms" that wind outward from the center, resembling a pin wheel |
| equinox | a point in Earth's orbit when the Earth is tilted neither toward nor away from the Sun |
| low tide | a falling of water |
| lunar eclipse | the casting of Earth's shadow on the moon when Earth is directly the moon and sun |
| neap tide | the tide with the least difference between high and low tide |
| optical telescope | a device that uses lenses or a combination of lenses and mirrors to gather visible light from space |
| space probe | a unmanned vehicle sent into space to relay data back to Earth |
| spring tide | a tide with the greatest difference between high and low tide |
| umbra | the darkest inner parts of a shadow |
| waning | becoming smaller;decrease in visibility of the sunlit portion of the moon |
| waxing | becoming larger;increase in visibility of the sunlit portion of the moon |
| high tide | a rising of water |
| Northern hemisphere | the region of Earth located above the equator |
| orbit | the path of a body in space around another body |
| penumbra | the outer part of a shadow |
| period of revolution | the time required for a planet to complete one orbit around the sun |
| period of rotation | the time required for a planet to complete one full turn on its axis |
| phase | a shape of the lit portion of the moon as seen from Earth |
| solar eclipse | the casting of the Moon's shadow on Earth when the Moon passes directly between the sun and Earth, blocking the suns light |
| solstice | a point in Earth's orbit when a hemisphere is tilted most toward or away from the sun |
| Southern hemisphere | region of Earth located below the equator |
| full moon | the phase of the moon in which the entire face of the moon appears lit |
| hyperbola | an open curve |
| lunar eclipse | the casting of Earth's shadow on the moon when the Earth is directly between the moon and sun |
| meteor | a streak of light produced when a meteoroid enters a planet's atmosphere |
| meteorite | a small rocky or rock grain that strikes Earth's surface |
| meteoroid | a small rocky body that travels in space |
| model | a representation of something that can be used to study, show, or explain how it functons |
| near-Earth asteroid | an asteroid that crosses Earth's orbit |
Created by:
mpustay16
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