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WorksheetsS5P2 Electricity
Total questions: 14
Worksheet time: 7mins
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.
When looking for a location to build a hydroelectric plant, a necessary requirement for generating power is?
access to the heat in the Earth
a large number of lakes
a source of moving water
organic plant and animal remains
Which of the following correctly describes one way in which static electricity is different from the electricity used by humans to run things in their homes?
Static electricity is a quick release of energy.
Static electricity is not a form of energy.
Static electricity flows at a constant rate.
Static electricity always goes in the same direction.
A group of students hang a balloon with an electrical charge from the ceiling with a string. They bring another balloon near the first one. Predict what will happen when the balloons are brought closer together. The balloon on the string will?
move upward if the charges are opposite.
remain still if the charges are opposite.
move downward if it loses its charge.
move away if the charges are the same.
Which statement supports that electricity can be very dangerous to humans?
It keeps us in contact with others who may live far away.
Inventors need to create something that could be put between humans and the flow of electricity.
Conductors are usually made from wire.
Our bodies are good conductors.
Arlene rubs a glass rod with a piece of silk, then placed the rod near her head. Select two of the following statements that are correct about the experiment.
The glass rod attracts Arlene's hair.
The glass rod is neutral after being rubbed with silk.
The glass rod causes Arlene's hair to become neutral.
The glass rod and Arlene's hair have different charges
The glass rod repels Arlene's hair.
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.
Alyssa wore a wool hat to school. When she took the hat off, her hair crackled and stood on end.
The hat removed positive charges from Alyssa’s hair.
Alyssa’s hair removed negative charges from the hat.
Alyssa’s hair removed negative charges from the hat.
The hat removed negative charges from Alyssa’s hair.
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
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 fell?
The balloon gave up positive charges to the wall.
he 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.
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.
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
A student is given three identically sized blocks. Each block is made of a different material. What characteristic of the blocks should be examined to find out which block is made of metal?
weight
conductivity
color
texture
