A) velocity. B) an action force. C) thrust. D) escape velocity.
A) 1971. B) 1957. C) 1969. D) 1961.
A) rover B) space probe C) space station D) space shuttle
A) Great Britain. B) the Soviet Union. C) China. D) the United States.
A) land astronauts on the moon. B) establish a permanent colony on the moon. C) prove that the moon is solid. D) put the first American in space.
A) it can be reused after returning to Earth. B) the total weight of the rocket is reduced as the rocket rises. C) it can carry humans into space. D) it requires less fuel to overcome gravity at the time of launch.
A) use solar panels to produce electricity for people on Earth. B) take photos and readings of other planets in the solar system. C) show that different countries can work together. D) carry out experiments in space.
A) Explorer 1. B) the Eagle. C) the moon. D) a rover.
A) NASA B) the International Space Station C) the space race D) the Apollo program
A) rover B) velocity C) thrust D) vacuum
A) Neil Armstrong B) Robert Goddard C) John Glenn D) Buzz Aldrin
A) space shuttles B) space stations C) satellites D) rovers
A) True B) False
A) False B) True
A) True B) False
A) True B) False
A) space probe B) space shuttle C) rovers D) space station
A) space probe B) space shuttle C) space station D) rovers
A) space station B) space probe C) space shuttle D) rovers
A) rovers B) space shuttle C) space probe D) space station
A) space probe B) space station C) rover D) space shuttle
A) space station B) rover C) space probe D) space shuttle
A) space shuttle B) space station C) space probe D) rover
A) space shuttle B) space probe C) space station D) rover
A) False B) True |