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