Middle School Science Review Assessment

Front

What is density?

Back

Density is the mass of an object divided by its volume, often expressed in grams per cubic centimeter (g/cm³). It determines how heavy an object is for its size.

Front

How do you arrange liquids by density?

Back

To arrange liquids by density, you must measure their mass and volume, then calculate their density. The liquid with the highest density will be at the bottom.

Front

What is friction?

Back

Friction is a force that opposes the motion of two surfaces in contact. It is necessary for walking and driving.

Front

What is gravity?

Back

Gravity is a force that attracts two bodies towards each other, depending on their masses and the distance between them.

Front

What is the difference between mass and weight?

Back

Mass is the amount of matter in an object, while weight is the force of gravity acting on that mass.

Front

What is the Earth’s rotation?

Back

The Earth's rotation is the spinning of the Earth on its axis, which takes approximately 24 hours and causes day and night.

Front

What is the Earth’s revolution?

Back

The Earth's revolution is the movement of the Earth around the Sun, which takes about 365 days and defines a year.

Front

What are the phases of the moon?

Back

The phases of the moon are the different appearances of the moon as it orbits the Earth, including New Moon, Waxing Crescent, First Quarter, Waxing Gibbous, Full Moon, Waning Gibbous, Last Quarter, and Waning Crescent.

Front

What is a force?

Back

A force is a push or pull that can cause an object to move, stop, or change direction.

Front

What is an example of a contact force?

Back

Friction is an example of a contact force, as it requires direct contact between two surfaces.