Physical Science Midterm 2024 Review

Front

What is work in physics?

Back

Work is defined as the product of force and the distance over which it is applied. It is measured in joules (J). Formula: Work = Force x Distance.

Front

How do you calculate work done when a force is applied?

Back

Work done (W) = Force (F) x Distance (d). For example, applying a force of 50 N over a distance of 3 m results in W = 50 N x 3 m = 150 J.

Front

What does a straight, diagonal line on a position-time graph indicate?

Back

A straight, diagonal line indicates constant velocity, meaning the object is moving at a steady speed in a straight line.

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 includes both speed and direction.

Front

What type of energy transformation occurs when a stretched bow releases an arrow?

Back

The transformation is from elastic potential energy to kinetic energy.

Front

What is elastic potential energy?

Back

Elastic potential energy is the energy stored in elastic materials as the result of their stretching or compressing.

Front

What is nuclear fission?

Back

Nuclear fission is the process of splitting an atomic nucleus into two or more smaller nuclei, along with the release of energy.

Front

What is the role of neutrons in nuclear fission?

Back

Neutrons can initiate nuclear fission by colliding with a heavy nucleus, causing it to split and release more neutrons and energy.

Front

What is the gravitational force?

Back

Gravitational force is the attractive force between two masses. It is one of the four fundamental forces of nature.

Front

What is the electromagnetic force?

Back

The electromagnetic force is the force that acts between charged particles, responsible for electricity, magnetism, and light.