L3 🧠 Conservation of energy

Which of the following is NOT true

• Energy cannot be created or destroyed

• Mechanical energy is the sum of kinetic energy and thermal energy

• energy can be transferred from one place to another

• energy can be converted from kinetic energy to gravitational potential energy

Tags

NGSS.MS-PS3-5

What type of energy transformation occurs when bread is toasted in a toaster

• kinetic to thermal

• chemical potential to thermal

• electrical to thermal

Suppose you are swinging on a swing. when will your gravitational potential energy be the greatest

• at the bottom of your path

• when your are rising

• at the top of your path

• when you are failing

Tags

NGSS.MS-PS3-2

A swing’s chains rub on their hooks as they move back and forth. Which statement is true?

• Friction converts mechanical energy into thermal energy.

• Air resistance converts thermal energy into friction.

• Air resistance converts thermal energy into mechanical energy.

• Friction converts thermal energy into mechanical energy.

Tags

NGSS.MS-PS3-5

Which type of energy transformation occurs when a green plant grows?

• chemical potential energy to radiant energy

• gravitational potential energy to radiant energy

• kinetic energy to chemical potential energy

• radiant energy to chemical potential energy

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3