6.ESS.1 #1 - Earth & Space Science

6.ESS.1 Describe the role of gravity and inertia in maintaining the regular and predictable motion of celestial bodies.

Select a FALSE statement about this standard.

• Gravity and inertia are ONLY needed for making roller coasters fun.

• Gravity and inertia are necessary for maintaining a stable world.

• Celestial means relating to the sky or outer space.

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_____ wondered if the force that made the apple fall from a tree was the same force that kept the planets in orbit around the sun.

• Benjamin Franklin

• Nikola Tesla

• Albert Einstein

• Sir Isaac Newton

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the force of attraction between objects that have mass

• gravity

• inertia

• force

• magnetism

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If a body is at rest or moving at a constant speed in a straight line, it will remain at rest or keep moving in a straight line at constant speed unless it is acted upon by a force.

• Law of Motion

• Law of Inertia

• Law of Force

• Law of Gravity

Where is an object’s center of gravity?

• the exact center of its mass

• the part that is closest to Earth

• any part of any object, as long as it has mass

• all of the above

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Select three examples of inertia.

• A person is pedaling his bike and suddenly hits the front brakes. His body continues to move, and he flies over the handle bars.

• A person is riding a jet ski in a straight line and suddenly turns the handles. His body continues moving in a straight line at the same speed as he is thrown from the jet ski.

• If the moon began to move faster in its path around the Earth, it would move too fast to stay in orbit and go hurdling into outer space.

• A car traveling slowly down a road attempts a curve. The friction holds the car to the road, so it rounds the curve safely.

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Which of these can cause a moving object to CHANGE DIRECTION?

• inertia

• gravity

• force

• mass

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_____ gravity is constantly pulling on Earth causing it to orbit around the Sun.

• Earth's

• The Solar System's

• Mercury's

• Sun’s

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The strength of gravity depends on the _____ of objects and distance between objects.

• color

• weight

• mass

• texture

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The greater an object’s mass, the _____ its inertia and larger the _____ needed to overcome the inertia.

• greater - power

• greater - force

• less- power

• less - force

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