Science 8A Final Exam

Front

What is the force required to keep an object moving in frictionless space?

Back

Zero, since no force is required to keep it moving.

Front

What two measurements are necessary for calculating speed?

Back

Distance and time.

Front

What is a characteristic of an unbalanced force?

Back

Causes a change in motion of an object.

Front

What is an example of Newton's third law of motion?

Back

A carbon dioxide-fueled rocket launches upward into the air as carbon dioxide gas accelerates toward the ground below the rocket.

Front

How does a blue supergiant star compare to a red giant star?

Back

Hotter and brighter.

Front

What is Newton's first law of motion?

Back

An object at rest stays at rest, and an object in motion stays in motion unless acted upon by an unbalanced force.

Front

What is the formula for calculating speed?

Back

Speed = Distance / Time.

Front

What is inertia?

Back

The tendency of an object to resist changes in its state of motion.

Front

What is the difference between mass and weight?

Back

Mass is the amount of matter in an object, while weight is the force of gravity acting on that mass.

Front

What is the role of gravity in motion?

Back

Gravity is a force that attracts objects toward each other, influencing their motion.