1.
What holds planets, stars, gas, and dust together in a galaxy?A) inertia B) gravity C) forces D) friction 2.
Why are circumpolar constellations visible all year long?A) All constellations are visible all year long. B) because they are the closest C) because they are located directly above the North Pole D) because they are the brightest stars 3.
Astronomers use a star's __________ to determine how far it is from Earth.A) parallel B) size C) brightness D) parallax 4.
When fusion occurs, the mass lost is converted into __________.A) energy B) liquid C) matter D) mass 5.
The __________ __________of a star is a measure of the amount of light it gives off.A) apparent magnitude B) absolute magnitude C) apparent strength D) absolute solitude 6.
Particles that escape from the sun's __________ move through space as solar wind.A) corona B) chromosphere C) photosphere D) surface 7.
__________ is the process that creates energy in the sun.A) Parallax B) Fission C) Fusion D) Blue shift 8.
A binary system is composed of ___________ stars.A) two B) five C) three D) four 9.
Prominence, or huge arching columns of gas, are thought to be caused by__________.A) the rotation of the galaxy B) the magnetic field associated with sunspots C) the Sun's rotation D) Earth's magnetic field 10.
An aurora, like the aurora borealis, is caused byA) solar flares B) solarwind C) particles from solar flares D) CME's 11.
Fusion occurs when __________ and __________ combine to make energy.A) carbon, oxygen B) hydrogen, helium C) hydrogen, oxygen D) carbon, helium 12.
When a star becomes a supernova its brightness __________.A) doesn't change B) increases C) decreases D) vanishes 13.
Circumpolar constellations __________.A) are located in a circular constellation. B) are always located above the North Pole. C) appear to circle around the North Star as the Earth rotates. D) never appear around the North Pole. 14.
The Moon orbits Earth and Earth orbits the Sun. What does the Sun orbit?A) It doesn't orbit. B) the Milky Way C) the solar system D) the universe 15.
Our sun is considered a star of__________ temperature.A) medium B) low C) hot D) cool 16.
Energy produced by the sun reaches the Earth through _________.A) convection B) radiation C) convection and radiation D) conduction 17.
The __________ __________ is a measure of the amount of light received on earth.A) absolute magnitude B) apparent magnitude C) absolute measure D) apparent measure 18.
By studying a star's spectra, scientists can determine __________ found in the star's atmosphere.A) gases B) dust C) elements D) clusters 19.
What does CME stand for?A) Coronal Mass Ejections B) Central Mass Ejections C) Coronal Mass Emissions D) Coronal Materials Ejections 20.
When stars are located closer to one another, their attraction to one another increases due to __________.A) their temperature B) gravity C) their weight D) their age