Science 8A Final Exam

Front

What is Newton's Third Law of Motion?

Back

For every action, there is an equal and opposite reaction.

Front

What is the formula to calculate distance?

Back

Distance = Speed × Time.

Front

What type of star has the longest lifespan?

Back

A star with low mass, like a red dwarf.

Front

What is friction?

Back

Friction is a force that opposes the motion of an object.

Front

What does it mean for an object to be at rest?

Back

An object at rest stays at rest unless acted upon by an external force.

Front

How do you calculate speed?

Back

Speed = Distance ÷ Time.

Front

What is the significance of a graph showing constant speed?

Back

It indicates that the object is moving at a steady rate without acceleration.

Front

What is the role of mass in gravitational force?

Back

Every mass exerts a gravitational force on every other mass.

Front

What is the definition of a blue giant star?

Back

A very massive star that burns hot and fast, leading to a shorter lifespan.

Front

What is the distance traveled if a cyclist moves at 10 m/s for 80 seconds?

Back

Distance = 10 m/s × 80 s = 800 meters.