Part 1: Final Exam Review Fall 2024 8th Grade Science

Front

What is a temporary magnet?

Back

A temporary magnet is a material that exhibits magnetic properties only when in the presence of a magnetic field. Once the external magnetic field is removed, it loses its magnetism.

Front

What type of energy is associated with the random movement of particles?

Back

Thermal energy is the energy that comes from the random movement of particles in a substance.

Tags

NGSS.MS-PS3-3

NGSS.MS-PS3-4

Front

At which point in a pendulum's swing is kinetic energy highest?

Back

Kinetic energy is highest at the lowest point of the swing (Point 3), where the pendulum is moving fastest.

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Front

What is the unit of distance?

Back

The unit of distance is meter (m).

Front

What does it mean if the net force acting on an object is zero?

Back

If the net force is zero, the forces acting on the object are balanced, meaning there is no change in motion.

Front

What is the definition of kinetic energy?

Back

Kinetic energy is the energy an object possesses due to its motion, calculated as KE = 1/2 mv², where m is mass and v is velocity.

Tags

NGSS.MS-PS3-1

Front

What is the definition of potential energy?

Back

Potential energy is the stored energy of an object due to its position or state, such as gravitational potential energy, which depends on height.

Tags

NGSS.MS-PS3-2

Front

What is the difference between balanced and unbalanced forces?

Back

Balanced forces do not cause a change in motion, while unbalanced forces result in acceleration or a change in the object's motion.

Tags

NGSS.MS-PS2-2

Front

What is the formula for calculating force?

Back

Force is calculated using the formula F = ma, where F is force, m is mass, and a is acceleration.

Tags

NGSS.MS-PS2-2

Front

What is the definition of mass?

Back

Mass is a measure of the amount of matter in an object, typically measured in kilograms (kg).