TN Ready Practice Test for Physical Science (Mod 1)

Front

What is the normal force?

Back

The normal force is the force exerted by a surface that supports the weight of an object resting on it, acting perpendicular to the surface.

Front

What behavior of waves do orcas use to locate food?

Back

Orcas use the behavior of reflection, where sound waves bounce off objects to help them locate prey.

Front

What does it mean when a car is described as stationary?

Back

A stationary car is one that is not moving; it remains in a fixed position.

Front

What does a free-body diagram represent?

Back

A free-body diagram illustrates all the forces acting on an object, helping to analyze its motion.

Front

What happens to light when it is reflected?

Back

When light is reflected, it bounces off a surface rather than being absorbed or transmitted.

Front

Define weight force.

Back

Weight force is the force exerted by gravity on an object, calculated as the mass of the object multiplied by the acceleration due to gravity.

Front

What is refraction?

Back

Refraction is the bending of light as it passes from one medium to another, changing its speed.

Front

What is frictional force?

Back

Frictional force is the resistance that one surface or object encounters when moving over another.

Front

What is the difference between applied force and normal force?

Back

Applied force is a force that is applied to an object by a person or another object, while normal force is the support force exerted by a surface.

Front

What is the significance of air resistance in motion?

Back

Air resistance is a type of friction that acts against the motion of an object moving through air, affecting its speed and acceleration.