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