Science for Grade 4

Give an example of an object with high potential energy.

• deflated balloon

• unwound spring

• dropped book

• stretched rubber band

How is kinetic energy different from potential energy?

• Kinetic energy is the energy stored in an object due to its position, while potential energy is the energy of motion.

• Kinetic energy is the energy of motion, while potential energy is the energy of sound.

• Kinetic energy is the energy of motion, while potential energy is the energy stored in an object due to its position or state.

• Kinetic energy is the energy of light, while potential energy is the energy stored in an object due to its position.

Give an example of an object moving at non-contact speed.

• Train moving on railway tracks

• Boat sailing in the ocean

• Satellite orbiting around the Earth

• Car driving on a road

How does speed affect energy?

• Speed has no effect on the energy of an object.

• Speed increases the gravitational energy of an object.

• Speed increases the kinetic energy of an object.

• Speed decreases the potential energy of an object.

What happens to the kinetic energy of an object when it comes to a stop?

• It disappears completely

• It increases exponentially

• It is converted into other forms of energy.

• It remains constant

Describe a situation where an object has high kinetic energy but low potential energy.

• An object falling freely from a height

• An object at rest on a high shelf

• An object at the top of a hill

• An object moving at a high speed close to the ground.