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