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Science Quiz(Solar System)
These flashcard are to study facts and information regarding the solar system and the topic within that subject.
21
Science
7th Grade
11/11/2015

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Term
What revolves around the solar system?
Definition
The sun and all the celestial bodies that revolve around it.
Term
What is in the solar system?
Definition
Asteriods, comets, meteroids, moons, natural satellites, and the eight planets. (Pluto used to be the ninth planet).
Term
What are the planetary motions?
Definition
The planetary motions are a rotation, a revolution, and an orbit.
Term
What is a rotation?
Definition
A rotation is a planet spinning on its axis all day for 24 hours.
Term
What is a revolution?
Definition
A revolution is when the planets move around the sun for one year and 365 1/4 days.
Term
What is an orbit?
Definition
An orbit is the path of the planets, asteroids, and comets.
Term
What is the shape of the orbit?
Definition
The shape of the orbit is elliptical(oval shaped).
Term
How many focuses or foci does an ellipse have? What is one of the foci?
Definition
An ellipse has two foci and the sun is one of them.
Term
Are planets elliptical?
Definition
Planets are slightly elliptical.
Term
Are comets elliptical?
Definition
Comets are highly elliptical.
Term
All planets rotate _____to_____rotation except for the planet_______. The planet_______roates_____to______instead. ________travels on its side.
Definition
All planets roate west to east rotation except for the planet Venus. The planet Venus roates east to west instead. Uranus travels on its side.
Term
How many fixed points, which are called foci, does an ellipse have?
Definition
An ellispe has two foci.
Term
What is the major axis of an ellipse?
Definition
The major axis of an ellipse is the longest staright-line distance across an ellipse.
Term
What is eccentricity? What is the eccentricity of a circle and a straight line?
Definition
Eccentricity is how flat or oval an ellipse is. The eccentricity of a circle is 0 and the eccentricity of a straight line is one.
Term
What happens when the closer the foci is from eachother?
Definition
The closer the foci is from eachother, the closer the ellispe is to the circle.
Term
What happens when the farther the foci is from eachother?
Definition
The farther the foci is from eachother, the closer it is to a straight line.
Term
What is inertia? Explain the definition in your own words.
Definition
Inertia is the concept that an object at rest will continue to remain at rest and that an object in motion will maintain the same direction and speed of that motion unless an outside or opposing force affects it.
Term
What is gravitation? Explain the definition in your own words.
Definition
Gravitation is the attractive force that exists between any two objects in the universe.
Term
What would inertia make a planet do?
Definition
Inertia would make a planet travel in a straight line.
Term
__________between the planet and the sun pulls the planet toward the sun.
Definition
Gravitational attraction between the planet and the sun pulls the planet toward the sun.
Term
______is a balance between inertia and gravity.
Definition
The orbit is the balance between inertia and gravity.
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