Energy Transfers and Transformations

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

• A

• B

• C

• D

Tags

NGSS.MS-PS3-2

What happens when the ball goes from the highest position to the lowest position

• PE and KE increases and decreases together

• Impossible to know without knowing the mass of the object

• the PE decreases while KE increases

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Which energy transformation best describes what happens in an oven?

• Electrical ->Thermal

• Electrical -> Radiant

• Electrical -> Mechanical

• Electrical -> Chemical

Tags

NGSS.MS-PS1-4

The diagram to the right represents a diver’s motion from the top of a high diving board into a pool of water. At what point does the diver have the greatest kinetic energy and the least potential energy?

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Energy is continuously ___________ from one place to another and transformed among various forms

• transferred

• destroyed

• created

• staying

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NGSS.MS-PS3-4

NGSS.MS-PS3-5

What type of energy do wind turbines convert into electrical energy?

• Solar

• Kinetic

• Thermal

• Chemical

Tags

NGSS.MS-PS3-5

The checkout counter at the grocery store has a conveyor belt that moves the items you want to purchase from one end to another.

An energy transformation occurs when a conveyor belt is in use. 

What form of energy does a conveyor belt use, AND what form of energy does a conveyor belt produce to perform its primary purpose?

Tags

NGSS.MS-PS3-5

Cora measured the energy transfer when she turned on her light.  She notes that 100J of electric energy transformed into 80J of light energy. How much energy was changed to heat energy? (just type number)

Tags

NGSS.MS-PS3-5

Explain how a wind turbine converts wind energy into electrical energy using the concept of energy transformation.

• The wind's kinetic energy is directly converted into electrical energy.

• The wind's kinetic energy first transforms into mechanical energy, which then converts to electrical energy.

• The wind's thermal energy is converted into electrical energy.

• The wind's chemical energy is converted into electrical energy.

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DOK Level 3: Strategic Thinking

During a winter camping trip, Anika, Nora, Noah, Elijah, and Isla were huddled around a campfire. They noticed that despite the freezing temperatures, their bodies were able to maintain a temperature of about 98.6 °F or 37 °C. Evelyn, who loves science, decided to explain to her friends where the energy that enables them to maintain a healthy body temperature comes from. Can you help Evelyn explain this to her friends?

• Light energy is converted to thermal energy in the food they eat. This thermal energy is released during digestion as chemical energy, and converted to heat energy when they move.

• Thermal energy from the Sun is stored in the food they eat and is converted to chemical energy during digestion. The chemical energy is burned creating heat.

• The process of digestion breaks down thermal energy and converts it to heat energy which is stored in their muscles.

• Their digestive system breaks down food into simpler substances. Some of the chemical energy in food is converted to thermal energy within their bodies and this helps to maintain body temperature.

Tags

NGSS.MS-LS1-7