Quiz 21 Study Guide Flashcards
Compared to other stars, the _________ is average-sized.
sun
Voyager 1 and Voyager 2 are __________ _____________.
space probes
The ___________ is a nonluminous object that reflects the sun’s light.
moon
____________ is the flight and space agency of the United States.
NASA
Does the sun have a weaker or stronger pull of gravity than the earth?
stronger
The _________ is the earth’s only natural satellite.
moon
The _________ is made of hot, glowing gases.
sun
A space ______________ is a satellite in which astronauts can live for months at a time.
station
The _______ gives off a steady supply of light and heat energy as it burns.
sun
Is the sun a luminous or nonluminous object?
luminous
Be able to label the phases of the moon.
See Science book, pp. 468-469