MELTS, Circuits, Light Energy

A student tests various objects in the circuit shown. Which of the following objects is the BEST conductor of electricity?

• Plastic chip

• Wood stick

• Rubber eraser

• Iron nail

• Cotton ball

Tags

NGSS.MS-PS1-1

A group of students test various materials and record their observations in the table shown below. Which two materials could be used to block the flow of electricity?

• Wood and steel

• Steel and rubber

• Plastic and iron

• Wood and plastic

• Air and water

Students use a circuit to investigate the properties of six objects. The buzzer makes a sound if an object completes the circuit. The circuit and observations are shown. Which objects are electrical insulators?

• Eraser, toothpick, cotton ball

• Eraser, paper clip, safety pin

• Toothpick, paper clip, safety pin

• Paper clip, safety pin, aluminum foil

Tags

NGSS.MS-PS2-3

The table lists some properties of four different samples of matter. Which sample could be a metal spoon?

• Sample 1

• Sample 2

• Sample 3

• Sample 4

Based on the table, which material would be best used to insulate electrical wires?

• Wood

• Plastic

• Copper

• Steel

• All of the materials

Tags

NGSS.MS-ETS1-2

Turning on a bulb in a lamp demonstrates that electrical energy can be used to produce which of the following?

• Mechanical energy and thermal energy

• Light energy and thermal energy

• Light energy and electrical energy

• Sound energy and electrical energy

Many types of fans are used in homes. One type of electric fan is shown below.

Which of these is produced as electric current passes through the circuit of this fan?

• Electrical Energy

• Thermal Energy

• Light Energy

• Mechanical energy

Tags

NGSS.MS-PS3-5

Activities that use energy are listed below.

1. A teacher gives a pencil to a student.

2. A dog wags its tail.

3. A student throws a ball.

4. A person waves at a friend.

5. A person turns the wheel of a car.

6. A student opens the classroom door.

Each of these activities requires the use of which kind of energy?

• Light

• Sound

• Thermal

• Mechanical

Tags

NGSS.MS-PS3-5

NGSS.MS-PS3-1

Cutting the wire at which numbered position would allow two of the lightbulbs to remain lit?

• Position 1

• Position 2

• Position 3

• Position 4

Which switches must be closed for Bulb 1 to remain dark but Bulb 2 to produce light?

• Switch 1 only must be closed

• Switches 2 and 3 must be closed

• Switches 1 and 3 must be closed

• Switches 1, 2 and 3 must be closed