8th Science Practice GMAS

Front

What is acceleration?

Back

Acceleration is the rate of change of velocity of an object. It occurs when an object speeds up, slows down, or changes direction.

Front

What are balanced forces?

Back

Balanced forces are two or more forces acting on an object that are equal in size and opposite in direction, resulting in no change in motion.

Front

What are unbalanced forces?

Back

Unbalanced forces occur when two forces acting on an object are not equal, causing the object to accelerate in the direction of the net force.

Front

What happens to water when it is heated by the sun?

Back

When water is heated by the sun, it gains energy and evaporates, turning from liquid to gas.

Front

What is conduction?

Back

Conduction is the transfer of heat through direct contact between materials, where heat moves from the hotter object to the cooler one.

Front

What is kinetic energy?

Back

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

Front

What is potential energy?

Back

Potential energy is the stored energy of an object due to its position or state, such as an object at a height above the ground.

Front

How does a roller coaster demonstrate energy transformation?

Back

A roller coaster transforms potential energy at the top of a hill into kinetic energy as it descends, losing potential energy and gaining speed.

Front

What is the net force?

Back

Net force is the overall force acting on an object when all the individual forces are combined, determining the object's acceleration.

Front

What is evaporation?

Back

Evaporation is the process by which liquid water turns into water vapor, occurring at any temperature when molecules gain enough energy.