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