UNIT TEST: ENERGY

What energy transformation takes place when a ukulele is strummed?

• Kinetic energy into sound energy

• Chemical energy into electrical energy

• Potential energy into kinetic energy

• Electrical energy into light energy

Tags

NGSS.MS-PS3-5

What energy transformation occurs when a light bulb is switched on?

• Chemical energy into sound energy

• Kinetic energy into potential energy

• Electrical energy into light and heat

• Mechanical energy into electrical energy

What transformation takes place when a match is struck?

• Electrical energy into mechanical energy

• Sound energy into kinetic energy

• Kinetic and chemical energy into light and heat

• Potential energy into kinetic energy

Tags

NGSS.MS-PS3-5

What transformation occurs when a drawn bow and arrow is released?

• Elastic potential energy into kinetic energy

• Chemical energy into electrical energy

• Gravitational energy into mechanical energy

• Thermal energy into sound energy

Tags

NGSS.HS-PS3-3

How is energy transformed in the process of photosynthesis in plants?

• Thermal energy into potential energy

• Kinetic energy into electrical energy

• Light energy into chemical energy

• Chemical energy into kinetic energy

Tags

NGSS.MS-LS1-6

What energy is associated to motion?

• Potential energy
• Kinetic energy
• Thermal energy
• Chemical energy

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

What energy is related to the height or position of an object?

• Potential energy
• Chemical energy
• Thermal energy
• Kinetic energy

Tags

NGSS.MS-PS3-2

Aside from height and mass, what information do we need to compute for potential energy?

• Time taken to reach the height and the color of the object
• Density of the object and the distance from the ground
• Acceleration due to gravity (g) and the formula for potential energy (PE = mgh)
• Volume of the object and the speed at which it was lifted

To solve for kinetic energy, aside from mass, what other information do we need?

• Density
• Velocity
• Volume
• Acceleration

Tags

NGSS.MS-PS3-1

A car with a mass of 10kg is traveling at a speed of 3 m/s. What is the kinetic energy of the car?

• 45 J
• 15 J
• 30 J
• 5 J

Tags

NGSS.MS-PS3-1