Energy Review 9th grade

At which point(s) on the roller coaster is the gravitational potential energy at its maximum?

• A
• B
• C
• D

At which point(s) on the roller coaster is the kinetic energy at its maximum?

• A
• B
• C
• D

Gravitational potential energy depends on the ________ and ________ of the object. 

• Height and mass
• Friction and movement
• Mass and Movement
• Height and Friction 

The Law of Conservation of Energy states that total amount of energy in a closed system will always

• stay the same
• increase
• decrease
• cannot be determined

Calculate the PE of a 2 kg cat perched 10 meters above the ground.

• 20J

• 200J

• 2.04J

• 200W

How high up is a 3200-kg plane if it has 960000 J of potential energy?

• 10 m

• 30 m

• 307200000 m

• 300 m

Energy of a rock perched on a cliff is an example of...

• gravitational
• elastic
• chemical
• kinetic

Energy from a compressed spring would be an example of...

• kinetic
• elastic
• gravitational
• chemical

Energy of an object in motion is an example of...

• Kinetic

• Potential

• Elastic

• Nuclear

The Law of Conservation of Energy states:

• Energy can be created or destroyed but not transformed

• Energy cannot be created or destroyed, it can only be transformed (or converted).

• Energy can't be created, destroyed or transformed

• Energy only comes from Marvin the Martian's phaser!