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E.science- astronomy
Term | Definition |
---|---|
What is an astreiod? | small rocky objects that orbit the sun. |
in between what planets is the astreiod belt located. | Mars and jupiter. |
what is a meteor? | a streak of light in the sky. |
what is a crater? | a large bowl shaped cavity in the ground or on the surface of a planet or the moon. |
what is an astreiod made of? | metals and rocky materials. |
what are comets made up of? | ice, dust, and rocky material. |
what is rotation? | the action of rotating around the axis. |
what is gravity? | a force that attracts a body towards the center of the earth or toward any other physical body having mass. |
Where does gravity pull you when you stand on Earth? | towards the center. |
What are the two factors that affect the gravitational attraction between objects? | mass and distance. |
what is mass? | the amount of material in an object. |
what is weight? | the measure of amount of downwards force that gravity exerts on an object. |
How does gravity affect the orbital velocities of planets? | it makes it decrease and move slower. |
deflection | objects curved to the curved right in the north hemisphere and to the left in south hemisphere. |
what angle is earths axis tilted on? | 23.5 degrees. |
revolution | orbiting around the sun. |
red shift | universe is expanding |
blue shift | objects are moving towards us. |
eccentric | oval shape |