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Astronomy Vocabulary Review (Grade 8)

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Astronomy Vocabulary Review

An exoplanet is a planet that orbits a star other than the Sun.
  1. True
  2. False
What is the model of the solar system in which the Sun and other planets revolve around Earth?
  1. geocentric
  2. equatorcentric
  3. heliocentric
  4. gaseouscentric
The path an object takes around the Sun is called                .
  1. an universe
  2. a nebulae
  3. an orbit
  4. a star
This is a large body in space that orbits a star and does not produce light.
  1. moon
  2. planet
  3. comet
  4. satellite
A small body, either man-made or natural, revolving around a larger body is called a                .
  1. satellite
  2. star
  3. comet
  4. planet
The shape of a planet's orbit.
  1. Albedo
  2. Ellipse
  3. Transit
  4. Aphelion
The four planets that are closest to the Sun are called the                 planets.
  1. outer
  2. inner
A very slow directional shift of Earth's axis that requires 26,000 years to complete is called
  1. precession.
  2. retrograde motion.
  3. occultation.
  4. perturbation.
The Moon moves in a line directly between Earth and the Sun, casting a shadow on Earth.
  1. Solar Eclipse
  2. Lunar Eclipse
  3. Winter Solstice
  4. Earth Eclipse
Earth spins on its axis. What does the term axis mean?
  1. A metal bar that connects the North and South Pole.
  2. The path that Earth takes as it revolves around the Sun.
  3. An imaginary line around the middle of Earth.
  4. An imaginary line which runs through the center of Earth.
What Earth does every 24 hours on its axis.
  1. orbit
  2. revolution
  3. rotate
A small chuck of rock or metal in space.
  1. meteoroid
  2. meteorite
  3. asteroid
  4. meteor
What is a loose collection of ice, dust, and small rocky particles, typically with a long, narrow orbit?
  1. comet
  2. asteroid
  3. meteor
  4. meteorite
A meteor that has landed on Earth's surface.
  1. meteoroid
  2. meteorite
  3. asteroid
  4. meteor
Large pieces of space rock with irregular shapes are called
  1. asteroids.
  2. comets.
  3. meteors.
  4. dwarf planets.
What is the name of the region beyond Neptune's orbit where icy bodies lie?
  1. The Kuiper Belt
  2. The Oort Cloud
  3. The Outer Asteroid Belt
  4. All of the Above
What is the name given to an area between Mars and Jupiter?
  1. Solar System
  2. Asteroid Belt
  3. Kuiper Belt
  4. Gas Giants
These planets are also known as gas giants.
  1. Terrestrial planets
  2. Jovian planets
  3. Inferior planets
  4. Superior planets
What day is it when the Sun is at its lowest elevation in the sky all year and we experience the shortest day of the year?
  1. summer solstice
  2. winter solstice
  3. summer equinox
  4. winter equinox
Flat lowland areas on the Moon are
  1. craters.
  2. volcanoes.
  3. highlands.
  4. maria.
The phase of the Moon in which the entire lit half is facing away from Earth is called a                 moon.
  1. full
  2. new
  3. first quarter
  4. third quarter
When the sunlit side of the Moon seen from Earth gets smaller, we say it is                .
  1. waxing
  2. new
  3. full
  4. waning
The changing views of the Moon are called
  1. phases.
  2. seasons.
  3. reflections.
What Moon phase is larger than a semi-circle, but smaller than when all the Moon is illuminated?
  1. Waning
  2. Waxing
  3. Gibbous
  4. Quarter
Huge, arching columns of gas that can be caused by the magnetic field of sunspots are called
  1. coronal mass ejections.
  2. prominences.
  3. solar wind.
  4. solar flares.
Streams of protons and electrons ejected at high speed from the solar corona.
  1. solar flare
  2. solar wind
  3. sunspot
  4. sun darkening
The outermost layer of the Sun's atmosphere is the
  1. corona.
  2. chromosphere.
  3. photosphere.
  4. convection zone.
What is a dwarf planet?
  1. nearly round, orbits Sun, has cleared its neighborhood of debris
  2. nearly round, does not orbit Sun and has cleared its neighborhood of debris
  3. nearly round, orbits Sun, has not cleared its neighborhood of debris
Which science includes the study of stars?
  1. meteorology
  2. geology
  3. hydrology
  4. astronomy
A                 is a large group of stars held together by gravity.
  1. star cluster
  2. galaxy
  3. constellation
  4. supergiant
Stars that regularly or repeatedly change in magnitude are called
  1. variable stars.
  2. red giant stars.
  3. novas.
  4. black holes.
The measure of a star's brightness is called its
  1. color index.
  2. visual binary.
  3. magnitude.
  4. parallax.
A huge cloud of gas and dust from which new stars and galaxies form is called
  1. a pulsar.
  2. a nova.
  3. a nebula.
  4. the universe.
A collection of stars, dust, and gas bound together by gravity are called a                .
  1. nebula
  2. quasar
  3. cluster
  4. galaxy
What is a group of stars that make up a pattern in the sky called?
  1. galaxy
  2. cluster
  3. constellation
  4. solar system
A plot of surface temperatures of stars against their absolute magnitude is called
  1. an H-R diagram.
  2. a stellar chart.
  3. a constellation map.
  4. a spectrum.
What object produces its own light energy?
  1. moon
  2. star
  3. satellite
  4. asteroid
A light year is a measurement of
  1. time.
  2. distance.
  3. temperature.
  4. star brightness.
Our Sun is a                 star.
  1. giant
  2. white dwarf
  3. main sequence
  4. neutron
What term do astronomers use to describe a galaxy that has a jumbled scattering of stars?
  1. barred spiral galaxy
  2. elliptical galaxy
  3. irregular galaxy
  4. spiral galaxy
The                 Theory is the prevailing cosmological model for the birth of the universe.
  1. Big Crunch
  2. Big Bang
  3. Big Flare
  4. Solar Flare
What is all of space?
  1. Galaxy
  2. Constellation
  3. Planet
  4. Universe
What is the force that tends to pull together the matter in stars and planets?
  1. gravity
  2. nuclear fusion
  3. expansion
  4. nuclear fission
Extremely distant, bright, energetic object located in the core of some active galaxies.
  1. pulsar
  2. quasar
  3. black hole
  4. white dwarf
What is the actual brightness of a star called?
  1. Apparent magnitude
  2. Absolute magnitude
  3. Absolute intensity
  4. Apparent intensity
The process by which stars produce their energy is called
  1. internal combustion.
  2. nuclear fusion.
  3. nuclear fission.
  4. electromagnetic radiation.
What is a spectroscope used for?
  1. Analyze what elements a star contains
  2. Measure the distance to stars
  3. Measure a star's temperature
  4. Make distant objects appear closer
This is the type of telescope that uses both lenses and mirrors to gather light.
  1. refractor telescope
  2. reflector telescope
  3. composite telescope
  4. radio telescope
What unit of measurement is approximately equal to the distance between the Sun and Earth?
  1. astronomical unit
  2. light-year
  3. parsec
  4. arc second
To fly beyond a planet's gravitational pull, a spacecraft must reach                       .
  1. velocity
  2. orbital velocity
  3. escape velocity
  4. geostationary velocity

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