Study

Unit 4

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  • Scientists keep ________ on comets to know when they will appear.
    data
  • True of False: Some stars may have planets like Earth.
    True
  • Everyone / No one / Anyone / Someone knows for sure if there is life on other planets or not.
    No one
  • People live and work on the _________________. They perform experiments in space.
  • True of False: The Milky Way might be a galaxy.
    False: It is a galaxy.
  • Humans need oxygen in their __________ in order to breathe.
    atmosphere
  • Someday we may land a ______________ on the moon again.
    spacecraft
  • Everyone / No one / Anyone / Someone knows the answer, but everyone / no one / anyone / someone has an opninion!
    No one and everyone
  • Earth is a ___________ that moves around the sun.
    planet
  • If everyone / no one / anyone / someone tells you that they know, that person really doesn't know!
    anyone or someone
  • I will debate about life in space with everyone / no one / anyone / someone who wants to.
    anyone
  • Do you think ______________ really have green skin?
    extraterrestrials
  • The Earth and other planets _______ the sun.
    orbit
  • The Earth takes a ____________ around the sun every year.
    journey
  • Many people ________ whether there is life on other planets.
    debate
  • _________ can go to outer space and live on a space station.
    Astronauts
  • There are many ____________ in the universe.
    galaxies
  • ___________ in other solar systems are extremely far away.
    Planets
  • The sun and planets make up our ______________.
    solar system
  • Everyone / No one / Anyone / Someone likes to debate about life on other planets.
    Eveveryone
  • Are you everyone / no one / anyone / someone who likes to debate?
    someone
  • A ________ is a cloud of rock, ice, and gast that orbits the sun.
    comet
  • True of False: Earth may have an atmosphere.
    False: It does have an atmosphere.
  • A powerful _________ is needed to send anything into space.
    rocket
  • Our ___________ is called the Milky Way.
    galaxy