A) a planet
B) a moon
C) a star
D) a comet
A) That lady is a pretty movie star.
B) My teacher put a red star on my paper.
C) I know that man is a famous rock star.
D) A star is a hot, glowing ball of gases.
A) The planets that have moons.
B) The red planets are the hottest.
C) The planets that are closest to the sun.
D) The ones that are farthest from the sun.
A) It is such a small planet.
B) It is so rocky.
C) It has a long orbit.
D) It is just too close to the sun.
A) The planet has no water.
B) It is the closest planet to the sun.
C) It is just too cold on this planet.
D) It would spin sideways.
A) The ones closest to the sun.
B) The reddest planets are the warmest.
C) The ones farthest away from the sun.
D) The ones with frozen ice.
A) at the center of the Earth
B) at the center of the universe
C) at the center of the galaxy
D) at the center of the solar system
A) ten thousand degrees
B) one million degrees
C) twenty seven million degrees
D) five thousand degrees
A) It is the largest known star.
B) It is the hottest star.
C) It is an average-sized star
D) It is a small star.
D) electrical power
A) Earth: It has living things.
B) Jupiter: It is too big to be a planet.
C) Pluto: It may not be a "true" planet.
D) Saturn: It has so many rings.
1.C 2.C 3.D 4.C 5.D 6.B 7.D 8.D 9.A 10.A 11.D 12.C 13.C 14.A 15.C