7th Grade Physical Science 1st Sem Exam Review

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 does Charles' Law state?

Back

Charles' Law states that as the volume of a gas increases, the temperature also increases, provided the pressure remains constant.

Front

What is net force?

Back

Net force is the overall force acting on an object after all the individual forces are combined. It determines the object's acceleration.

Front

How do you calculate distance in a straight line?

Back

Distance is calculated by adding the lengths of all segments traveled in a straight line.

Front

What is displacement?

Back

Displacement is the shortest distance from the initial to the final position of an object, along with the direction.

Front

What is the formula for calculating speed?

Back

Speed = Distance / Time.

Front

What is acceleration?

Back

Acceleration is the rate of change of velocity of an object with respect to time.

Front

What is the relationship between pressure and volume in a gas?

Back

According to Boyle's Law, as pressure increases, volume decreases, provided the temperature remains constant.

Front

What is a vector quantity?

Back

A vector quantity is a physical quantity that has both magnitude and direction, such as velocity and force.

Front

What is a scalar quantity?

Back

A scalar quantity is a physical quantity that has only magnitude and no direction, such as speed and mass.