| Term | Definition |
|---|
| mercury | closest to the sun |
| mariner 10 | only spacecraft that has gotten close to mercury |
| mariner 10 | collects a lot of information |
| mercury | is sizzling 750 degrees in day |
| freezer -300 | cools down at night |
| atmosphere | is a layer of mist, gases, clouds that covers a planet and holds the heat in |
| earth atmosphere | air made up several gases |
| gases is called | oxygen |
| oxygen | breathe to stay alive |
| no oxygen | mercury |
| holds in heat from the sun | earth atmosphere |
| sky stay dark | no atmosphere |
| no air particles | scatter the light waves all over the sky |
| rotating | spinning in place |
| revolving | moving in a circle around the sun |
| planet | rotate as they revolve |
| 24 hrs | earth to rotate once |
| earth day | it is the length of time that a day lasts on earth |
| mercury | what don't spin fast |
| 59 | earth day for mercury to rotate one time |
| 88 | earth day for mercury to make one full trip around the sun |
| mercury | fastest planet in the solar system |
| 365 | earth to revolve around the sun |
| oval | mercury revolve pattern |
| oval pattern | elliptical orbit |
| closer /farther from the sun | elliptical orbit makes it |
| no planets | orbit the sun in a perfert circle |
| mercury/pluto | have the most elliptical in our solar system |
| mercury | smallest planet |
| dry, dusty, empty and lonely | mercury/moon |
| craters | has many on surface |
| asteroids | place where space rocks crashed into |
| texas | largest crater is a big as |
| reach our planet | earth atmoshpere burn asteroid up |
| parts of mercury | have no craters |
| terrestrial | mercury is a rocky planet |
| earth like | terrestrial means |
| solar system | five terrestrial planet in |
| four | gaseous planet |
| sink | can't land on gaseous planet will |
| iron and nickel core | mercury |
| no man | has ever gone to mercury |
| 1 | space ship was sent |
| mariner 10 | unmanned spacecraft |
| november 1973 | mariner 10 launched |
| february 1974 | mariner 10 reach venus |
| messenger | next spacecraft is called |
| to pass over | what does transiting mean |
| composite | made up of many parts |
| roman | name mercury did not know god |
| 4 times a year | mercury travel around the sun |
Combine with other sets
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