1st Semester Science Final Exam 100 Questions

Front

What is potential energy (PE)?

Back

Potential energy is the energy stored in an object due to its position or state. For example, a roller coaster at the top of a hill has high potential energy.

Front

What is sliding friction?

Back

Sliding friction is the force that opposes the motion of an object sliding over a surface. An example is a boy pushing a box across the floor.

Front

What causes a skateboard to slow down when it hits gravel?

Back

The skateboard slows down due to friction from the gravel.

Front

At which point does a pendulum have the greatest kinetic energy?

Back

A pendulum has the greatest kinetic energy at its lowest point (C).

Front

How do you calculate density?

Back

Density is calculated by dividing mass by volume (Density = Mass/Volume).

Front

What is kinetic energy (KE)?

Back

Kinetic energy is the energy of an object in motion. It depends on the mass and velocity of the object.

Front

What is the formula for kinetic energy?

Back

The formula for kinetic energy is KE = 1/2 mv², where m is mass and v is velocity.

Front

What is friction?

Back

Friction is a force that opposes the motion of an object. It can be caused by contact between surfaces.

Front

What is the relationship between mass and gravitational potential energy?

Back

Gravitational potential energy increases with mass and height. The formula is PE = mgh, where m is mass, g is acceleration due to gravity, and h is height.

Front

What is an example of gravitational potential energy?

Back

An example of gravitational potential energy is a book on a shelf. The higher the shelf, the more potential energy the book has.