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