Science 8A Final Exam

Front

What is the fastest mode of transportation among a runner, walker, and biker?

Back

Biker

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

Earth is part of which galaxy?

Back

Milky Way

Front

Which of the following is NOT an example of acceleration?

Back

An object is in constant motion.

Front

Compared to a red giant star, how does a blue supergiant differ?

Back

Hotter and brighter.

Front

Define acceleration in physics.

Back

Acceleration is the rate of change of velocity of an object.

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 a net external force.

Front

What is the difference between speed and velocity?

Back

Speed is a scalar quantity that refers to how fast an object is moving, while velocity is a vector quantity that refers to the speed of an object in a given direction.

Front

What is the role of gravity in the motion of planets?

Back

Gravity is the force that keeps planets in orbit around the sun.

Front

What is the definition of a red giant star?

Back

A red giant star is a late stage in the life cycle of a star, characterized by a large radius and low surface temperature.