31. What is a solar flare?
a) A sudden and intense release of energy from the sun’s surface
b) A sudden and intense release of energy from a black hole
c) A sudden and intense release of energy from a planet’s core
d) A sudden and intense release of energy from a comet
32. What is the difference between a meteoroid and a meteor?
a) A meteoroid is a rock in space, and a meteor is a rock that has entered Earth’s atmosphere
b) A meteoroid is a rock that has entered Earth’s atmosphere, and a meteor is a rock in space
c) A meteoroid is a planetesimal, and a meteor is a small asteroid
d) A meteoroid is a small comet, and a meteor is a larger comet
33. What is a comet?
a) A celestial body composed of rock and metal
b) A celestial body composed of gas and dust, with a tail that points away from the sun
c) A celestial body composed of ice, with a tail that points away from the sun
d) A celestial body composed of antimatter
34. What is a meteor shower?
a) A phenomenon that occurs when many meteors enter Earth’s atmosphere at the same time
b) A phenomenon that occurs when a planet passes in front of a star, causing the star’s light to temporarily dim
c) A phenomenon that occurs when a star explodes
d) A phenomenon that occurs when a comet passes by Earth
35. What is a galaxy cluster?
a) A group of galaxies that are close together and bound by gravity
b) A group of stars that are close together and bound by gravity
c) A group of planets that are close together and bound by gravity
d) A group of black holes that are close together and bound by gravity
