8th-T2 L4: Electric & Magnetic Interaction

Draw

Circle the part of the image that shows that electrical energy has been transformed into mechanical energy.

Open Ended

​What makes the trolley travel?

Open Ended

How would you describe its motion?

Open Ended

List two other examples in which electrical energy transforms into mechanical energy.

Multiple Choice

What kind of motor does the trolley use?

• Gasoline motor
• Electric motor
• Magnetic motor

Draw

Circle what things are different in these two models.

Drag and Drop

A ​

Placeholder

is a device that measures small amount of ​

Placeholder

.

Drag these tiles and drop them in the correct blank above

galvanometer

current/electricity

thermometer

magnetism

Open Ended

​How do you think an electric motor works?

Multiple Choice

What are the components of an electric motor?

• Circuit board, gears, springs, and lubricant
• Stator, rotor, commutator, brushes, and bearings
• Battery, wires, switch, and magnets
• Stator, rotor, commutator, brushes, and belts

Drag and Drop

Electric​ motors transform ​

Placeholder

energy into ​

Placeholder

energy.

Drag these tiles and drop them in the correct blank above

electrical

mechanical

chemical

light

Labelling

label the electric motor

Drag labels to their correct position on the image

brush

commutator

coil

current wires

magnet

Multiple Choice

What is a generator?

• a device the creates a magnetic field

• a device the turns mechanical energy into electrical energy

• a device that uses electricity

Drag and Drop

Examine the image. Then use the term clockwise or counterclockwise to complete each sentence correctly.



When the conductor moves upward through the magnetic field, the induced current flows ​

Placeholder

.



When the conductor moves downward, the induced current is ​

Placeholder

.

Drag these tiles and drop them in the correct blank above

counterclockwise

clockwise

Multiple Choice

What is a transformer?

• a device that turns energy into magnetism

• a device that adjusts the energy by increasing or decreasing the voltage

• a device that has mechanical energy

Drag and Drop

An​

Placeholder

is a device that increases/decreases voltage using two separate ​

Placeholder

instead of insulated wire that is wrapped around an ​

Placeholder

Drag these tiles and drop them in the correct blank above

coils

iron core

electrical transformer

Multiple Select

What are the two types of electric transformers?

• Up and down transformers
• North and south transformers
• Step-up transformer

• step-down transformer

Students will now complete the worksheet using the Phet Simulation that is on the last slide. Print out worksheet that is on the next slide. Also can find it on your drive in the science folder for 8th Grade Activities.

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