Chapter 4 Retest

What is Eccentricity?

• Eccentricity is the angle of rotation of a conic section.
• Eccentricity is a measure of how far an objects orbit is from being circular

• Eccentricity refers to the size of a conic section.
• Eccentricity is a measure of the distance between two foci of a conic section.

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What is an Ellipse:

• An ellipse is a stretched out circle

• An ellipse is a straight line that connects two points.
• An ellipse is a type of triangle with equal angles.
• A circle is a polygon with four sides.

What is gravity?

• Gravity is a type of energy that powers the universe.
• Gravity is the speed at which objects fall to the ground.
• Gravity is the temperature of an object in space.
• Gravity is the force that attracts objects with mass towards one another.

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What is inertia?

• Inertia is the resistance of an object to changes in its motion.
• Inertia is the speed at which an object travels in a vacuum.
• Inertia is the force that causes an object to move faster.
• Inertia is the energy stored in an object at rest.

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What is momentum?

• Momentum is the force applied to an object.
• Momentum is the speed of an object in motion.
• Momentum is the measure of how hard it is to stop a moving object

• Momentum is the energy stored in an object.

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What is an Orbit?

• An orbit is a type of celestial body.
• An orbit is the speed at which an object travels in space.
• An orbit is the force that pulls objects towards each other.
• An orbit is the path an object takes as it moves around another object in space due to gravity.

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NGSS.MS-ESS1-2

What is the Period of Revolution?

• The gravitational pull of a star on its planets.
• The speed at which a planet rotates on its axis.
• The time taken for an object to orbit around the sun

• The distance between two celestial bodies.

Tags

NGSS.MS-ESS1-1

What is the Period of Rotation?

• The period of rotation is the time taken for one complete rotation around an axis.
• The period of rotation is the angle covered in a single rotation.
• The period of rotation refers to the speed of an object in motion.
• The period of rotation is the distance traveled in one rotation.

How long is the revolution of the earth

?

• One revolution is 180 days.

• One revolution is 365 days.

• One revolution is 720 days

• One revolution is 90 days.

How long is the rotation of the earth?

• Approximately 24 hours (23.93 hours for a sidereal day)
• Roughly 48 hours
• Approximately 12 hours
• About 36 hours