Energy Conservation and Transformation

Energy Transformations

All the energy in the UNIVERSE is already here and will always be here.

Law of Conservation of Energy

states that energy cannot be created or destroyed, it can only change forms.

Multiple Choice

When energy is released, it disappears.

• True

• False

Energy Transformation

is the process of energy changing from one form to another.

Multiple Choice

What type of energy is "stored" energy

• Potential Energy

• Kinetic Energy

• Thermal Energy

Multiple Choice

What type of energy is the "energy in motion"?

• Potential Energy

• Kinetic Energy

• Thermal Energy

Multiple Choice

What type of energy do I posses just by virtue of my height above the ground?

• Kinetic Energy

• Gravitational Potential energy

• Thermal Energy

• Chemical Energy

Multiple Choice

If I climb up a ladder I am increasing my level of ___________

• Kinetic Energy

• Gravitational Potential Energy

• Thermal Energy

• Nuclear Energy

Multiple Choice

If I step off a ladder I am converting __________ Energy into ________ Energy

• Gravitational potential energy , Kinetic Energy

• Kinetic Energy , Gravitational Potential Energy

• Chemical Energy , Gravitational Potential Energy

• Friction , Temperature

Multiple Choice

What is the energy transformation that occurs in an electric pencil sharpener?

• mechanical energy to electrical energy

• electrical energy to mechanical energy

• radiant energy to sound energy

• chemical energy to mechanical energy

Multiple Choice

What energy transformation occurs when a crock pot is plugged into an outlet and then the control knob is turned "on"?

• thermal to electrical

• mechanical to thermal

• electrical to thermal

• electrical to sound

Multiple Choice

According to the Law of Conservation of Energy, energy cannot be _________ or ____________.

• destroyed, destroyed

• created, saved

• created, destroyed

• lost, found

Multiple Choice

The roller coaster cart has the most kinetic energy at position-

• W

• X

• Y

• Z

Multiple Choice

Which kind of energy change occurs when a candle is burning?

• Chemical to light.

• Light to electrical.

• Solar to heat.

• Chemical to electrical.

Multiple Choice

Energy Stored in chemical bonds

• Electrical Energy

• Chemical Energy

• Transformation

• Radiant Energy

Multiple Choice

Energy of motion

• gravitational potential energy
• mechanical energy
• kinetic energy
• elastic potential energy

Multiple Choice

Energy in the form of waves that can move through space

• gravitational potential energy
• electromagnetic energy
• sound energy
• elastic potential energy

Multiple Choice

Energy of moving electrons

• electrical energy
• electromagnetic energy
• sound energy
• mechanical energy

Multiple Choice

As a rollercoaster travels upward what type of energy transfer is taking place?

• electrical to thermal energy

• kinetic to potential energy

• mechanical to chemical energy

• potential to kinetic energy

Multiple Choice

What kind of energy is in a rock at the edge of a cliff?

• Potential
• Kinetic

Multiple Choice

What kind of energy is in a moving skateboard?

• Potential
• Kinetic

Multiple Choice

When a pendulum swings, at which point is kinetic energy highest?

• 1
• 2
• 3
• 4

Multiple Choice

When a pendulum swings, at which point is potential energy at its greatest?

• 1
• 2
• 3
• 4

Multiple Choice

What is the equation for calculating gravitational potential energy

• mv

• 1/2 mv^2

• mgh

• Ft

Multiple Choice

The faster an object moves, the more kinetic energy it has.

• true

• false

Multiple Choice

What is the correct unit for energy?

• meters (m)

• kilogram meters per second (kg m/s)

• Newtons (N)

• Joules (J)

Multiple Choice

What is the equation for calculating kinetic energy?

• mv

• 1/2 m $$v^2$$  

• mgh

• Ft

Fill in the Blank

What type of energy do you possess just by virtue of your height above the ground?

Multiple Choice

What is the formula for gravitational potential energy?

• GPE = 1/2 m v^2

• GPE = mgh

• F=ma

• P=mv

Multiple Choice

What is the type of energy you possess just by virtue of your mass and your velocity?

• Gravitational Potential Energy

• Momentum

• Kinetic Energy

• Thermal Energy

Multiple Choice

What is the formula for kinetic energy?

• KE = mgh

• KE = 1/2 m v^2

• KE = mv

• KE = ma

Multiple Choice

What is the gravitational energy of an object with a mass of 10 kg which has a height of 5 meters above the ground?

• 50 Joules

• 2 Joules

• 490 Joules

• 2,500 J

Multiple Choice

What is the Kinetic Energy of a 2 kg ball moving at a velocity of 10 m/s?

• 20 J

• 5 J

• 196 J

• 100 J

Multiple Choice

An 2 kg object at rest 5 meters above the ground possess 98 J of potential energy. The ball rolls down a ramp converting all that potential energy to kinetic energy. What will be the objects speed at the bottom of the ramp?

• 980 m/s

• 9.9 m/s

• 12.5 m/s

• It cannot be calculated