IPA Kelas 7

What is energy?

• Energy is a type of matter.

• Energy is the speed of light.

• Energy is a form of currency.

• Energy is the capacity to do work.

Name two types of energy.

• Kinetic energy, Potential energy

• Chemical energy

• Nuclear energy

• Thermal energy

What happens to energy when it changes form?

• Energy can be created during the transformation.

• Energy becomes unmeasurable after changing form.

• Energy is conserved but changes its form.

• Energy is lost when it changes form.

What is kinetic energy?

• Kinetic energy is the energy stored in an object at rest.

• Kinetic energy is the energy associated with an object's temperature.

• Kinetic energy is the energy of an object in motion.

• Kinetic energy is the energy released during a chemical reaction.

What is potential energy?

• Kinetic energy is the energy of motion.

• Potential energy is the energy of heat.

• Potential energy is the energy released during a chemical reaction.

• Potential energy is the energy stored in an object due to its position or state.

How does energy affect motion?

• Energy can only increase the temperature of an object.

• Energy influences motion by enabling objects to move or change their speed and direction.

• Energy has no effect on motion.

• Energy only affects stationary objects.

What is a force?

• A force is a type of energy that cannot be measured.

• A force is a fixed quantity that does not change.

• A force is an object that moves on its own.

• A force is an interaction that causes an object to change its motion.

What are the two types of forces?

• Contact forces and non-contact forces

• Static forces and dynamic forces

• Frictional forces and gravitational forces

• Balanced forces and unbalanced forces

What is the relationship between force and motion?

• Force has no effect on motion.

• Motion is independent of force.

• Force only affects stationary objects.

• Force causes changes in motion, as described by Newton's laws of motion.

What is friction?

• Friction is the force that opposes the relative motion of two surfaces in contact.

• Friction is the energy lost when two surfaces are heated together.

• Friction is the force that enhances the relative motion of two surfaces in contact.

• Friction is the attraction between two surfaces that keeps them together.