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