1. 1 1If a planet has a revolution of 2.0 Earth years, what can you assume about its orbital path? A It takes the planet twice as long to orbit the Sun as Earth. B The planet makes one full spin on its axis once every two years. C The planet’s orbital path will be elliptical in shape. D The planet’s orbital path is half the distance of Earth’s orbital path. 2What celestial body is the center of our solar system, around which every object orbits? A Earth B The Sun C Jupiter D Either Earth or the Sun, depending on the year 6.11A: Celestial Objects Earth and Space

2. 2 3Look at the picture of the astronaut on a moon. Upon which moon of the solar system have humans landed? A Europa B Callisto C Ganymede D Earth’s moon 6.11A: Celestial Objects Earth and Space

3. 3 4Look at the picture of our solar system. If a planet is described as rocky, terrestrial, and close to the Sun, which answer choice could correctly identify the planet? A Jupiter B Neptune C Mars D Saturn 6.11A: Celestial Objects Earth and Space

4. 4 5How often does Earth complete a full rotation? A About once every 365 days B About once every 24 hours C About once a season, every 3-4 months D Earth does not rotate at a predictable rate. 6Look at the picture of the space station. Astronauts on the space station are always on the lookout for danger. What is one celestial object that could harm the space station? A A moon B A planet C A comet D A meteor 6.11A: Celestial Objects Earth and Space

5. 5 7When planning to send a spaceship to Mars, the engineers at NASA are able to program an unmanned rocket to travel to the planet. What is one characteristic of planets that allows the scientists to do this? A No moons B Predictable orbit C Rocky terrain D Titled axis 8Look at the picture provided. What celestial body does the picture represent? A Comet B Asteroid C Moon D Meteor 6.11A: Celestial Objects Earth and Space

6. 6 9A student is sorting cards with pictures of celestial objects. In what group should the student place the Sun? A Gas giants B Planets C Stars D Comets 10A student noted that when talking about satellites, the items orbiting a planet can be natural or manmade. What are the four largest natural satellites of Jupiter? A The Galilean series rockets B The Galilean moons C The Galilean asteroids D The Galilean meteors 6.11A: Celestial Objects Earth and Space