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