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