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science Final
1st semester 7th grade
Question | Answer |
---|---|
Independent variable | what is being tested in an experiment; the variable that is purposely changed in a n experiment. |
Dependent variable | The results of the experiment; the variable that is measured |
1st Law of Motion | objects at rest tend to stay at rest and objects in motion tend to stay in motion in a straight line at a constant speed unless acted upon by and outside force |
Second Law | Force equals mass times acceleration (F=MA) or in simple terms, more force is required to change the speed and direction of a heavy object than a light object |
3rd Law | For every action there is a reaction and opposite reaction |
What is The Solar System | Solar system consists of Moons Comets asteroids and minor planets and dust and gas. |
What is the asteroid Belt | This is a band of asteroids sits between the orbits of the planets Jupiter and mars. |
What is the Kuiper belt | has pluto and millions of objects to small to be considered planets |
what is beyond The kuiper Belt | Oort Cloud |
Mercury | Less than 2 days in a year . Believed to be a core of a once large planet |
Venus | brightest planet our sky. Hottest planet due to runaway greenhouse effect. |
earth | 3/4 water more water than Land |
Mars | largest volcano found on this planet about 1/3 of Earths gravity |
Jupiter | Largest planet largest storm in the known universe |
Saturn | Has many rings and is the lightest planet |
Uranus | rotates on it's side |
Neptune | One year is 165 earth years |
Pluto | Now considered to be a dwarf planet, sometimes comes closer to the sun than neptune. |