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