A) velocity. B) an action force. C) escape velocity. D) thrust.
A) 1971. B) 1969. C) 1957. D) 1961.
A) space probe B) rover C) space shuttle D) space station
A) the United States. B) China. C) Great Britain. D) the Soviet Union.
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) take photos and readings of other planets in the solar system. B) carry out experiments in space. C) show that different countries can work together. D) use solar panels to produce electricity for people on Earth.
A) a rover. B) the Eagle. C) Explorer 1. D) the moon.
A) the International Space Station B) the space race C) NASA D) the Apollo program
A) thrust B) vacuum C) rover D) velocity
A) Neil Armstrong B) Robert Goddard C) John Glenn D) Buzz Aldrin
A) satellites B) rovers C) space stations D) space shuttles
A) True B) False
A) True B) False
A) False B) True
A) False B) True
A) rovers B) space station C) space probe D) space shuttle
A) space station B) rovers C) space shuttle D) space probe
A) rovers B) space station C) space probe D) space shuttle
A) space shuttle B) rovers C) space probe D) space station
A) rover B) space station C) space shuttle D) space probe
A) space shuttle B) rover C) space probe D) space station
A) space shuttle B) rover C) space probe D) space station
A) space shuttle B) space probe C) rover D) space station
A) True B) False |