S5P2

A group of students hang a balloon with a negative charge from the ceiling with a string. They bring another balloon with no charge near the first one. Predict what will happen when the balloons are brought closer together. The balloon on the string will?

• move away from the other if the charges are opposite.

• remain still if the charges are opposite.

• move downward if it loses its charge.

• move toward the other if the charges are the opposite.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

this circuit is .....?

• open
• parallel
• closed
• The cutest little circuit evah!

Why are electrical cords often covered with rubber?

• To slow the flow of electrons to keep them on the electric circuit to prevent a fire.

• To keep the wires from breaking apart.

• To keep wire from getting wet.

• So that you can determine what color goes where.

Tags

NGSS.MS-PS1-3

A student creates a simple circuit, as shown in the picture. Why did the student include a light bulb in the design?

• The light bulb provides the energy for the circuit.

• The light bulb turns the circuit on and off.

• The light bulb controls the flow of energy in the circuit.

• The light bulb proves the circuit is working.

Tags

NGSS.4-PS3-2

Grace rubs a balloon with a piece of silk, then placed the balloon near her head. Select two of the following statements that are correct about the experiment.

• The balloon attracts Grace's hair.

• The balloon is neutral after being rubbed with silk.

• The balloon causes Grace's hair to become neutral.

• The balloon and Grace's hair have different charges

• The balloon repels Grace's hair.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Which of the following occurs due to static electricity?

• A steel ball falls vertically to the ground after it is released from a height.

• An iron nail moves toward a bar magnet after the two are placed close to each other.

• A laboratory cart rolls across the floor after it is pushed by a student.

• A plastic comb attracts a small piece of paper after it is used to comb someone's hair.

Tags

NGSS.MS-PS2-3

Which pair of items will repel each other?

• a negatively-charged plastic strip and a negatively-charged piece of cloth

• a negatively-charged balloon and a positively-charged piece of paper

• a positively-charged wool sock and a neutral plastic bag

• a neutral cotton sweater and a negatively-charged plastic pellet

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

A student rubbed a balloon with a wool cloth. The balloon developed a negative charge. The student placed the balloon against a wall and let go. The balloon stayed next to the wall for a few minutes, then fell. What is the MOST likely reason the balloon stuck to the wall and then fell?

• The balloon gave up positive charges to the wall.

• The wall gave up negative charges to the balloon.

• The balloon gave up negative charges to the wall.

• The wall gave up positive charges to the balloon.

Tags

NGSS.MS-PS2-5

Which material is NOT a good electrical conductor?

• wood

• water

• copper

• aluminum

What is a material called if it does not conduct energy well?

• conductor

• reflector

• insulator

• radiator

Tags

NGSS.MS-PS3-3

NGSS.MS-PS3-4