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50 questions
Conductors are materials that...
Allow heat or electricity to pass through
Stop heat or electricity from passing through
Allow cold to pass through
Stop cold from passing through
A material that allows heat or an electric current to flow through easily
Conductor
Insulator
Magnetism
Electric Circuit
Why is electrical wiring usually covered with a layer of plastic?
To help electricity flow along the wire
To make it look pretty
To avoid electrocution
To reduce the amount of electricity that flow in the circuit
A material that prevents heat or an electric current from flowing
Conductor
Insulator
Magnetism
Electric Circuit
The flow of electricity through a circuit
Closed Circuit
Open Circuit
Electric Current
Magnetic
The above diagram shows an investigation to study a property of materials. After heating the rod at end A, the drawing pin at end B of the metal rod drops earlier than the glass rod. What conclusion can be drawn from this investigation?
All materials conduct heat equally well.
The metal rod can conduct electricity.
The metal rod is a better conductor of heat than a glass rod.
The metal rod is a better insulator of heat.
Substance X is a non-metal but it can conduct electricity. Substance X is ________________.
plastic
wood
carbon
glass
The above diagram shows a pan that has a plastic handle. Why are metal and plastic used for making this pan?
A
B
C
D
What is a conductor?
Material that does NOT transfer energy.
Materials that are connected to circuits.
Materials that transfer energy.
Materials that
Which of the following is a good conductor of heat and electricity?
newspaper
copper wire
glass plate
plastic bottle
This girl is wearing pink wool earmuffs to keep her ears warm in the snowy weather. Differentiate between conductors and insulators. How does the wool affect heat transfer? (wool is a type of fabric)
The wool is a conductor that transfers heat from her ears to the wool earmuffs.
The wool is an insulator that provides heat to keep the girl's ears warm.
The wool is a conductor that transfers heat from the girl's earmuffs to her ears.
The wool is an insulator that keep the girl's ears from loosing heat.
An insulator does not allow electricity to pass through it easily. Which of the following would make a good insulator?
copper penny
iron nail
metal doorknob
rubber glove
Mittens help keep your hands warm in winter because
they are colorful
they are fuzzy
they are conductors
they are insulators
Which is NOT a conductor
Which is NOT an insulator
Choose all the items that are insulators.
rubber band
nail
piece of wood
cotton
What are some examples of insulators?
silver, iron, cooper
metal spoon, penny, aluminum
rubber, glass, wood
gold, wire, nails
Some cooking spatulas are made out of plastic. Why are cooking spatulas often made out of plastic?
Because plastic is a good conductor of electricity, and this makes it safe to use while cooking.
Because plastic catches fire very easily when it is used for cooking.
Because plastic is a good conductor of heat, and this keeps the handle from getting too hot to touch while cooking.
Because plastic is a poor conductor of heat, and this keeps the handle from getting too hot to touch while cooking.
Four different materials at the same temperature were placed onto a hot stove. The information presented in the illustration shows the temperature of each material after ten minutes.
The results support the conclusion that which of the following materials conducts heat best?
Brick
Concrete
Glass
Aluminum
The above diagram shows a simple circuit. The metal spoon that is connected to the circuit is replaced with a plastic spoon. What is the aim of this investigation?
To determine which object can conduct electricity
To determine which object can conduct heat
To determine which object can float
To determine which object can allow light to pass through
The above diagram shows a kettle. Which of the following correctly states the properties of the materials for making part X and Y?
A
B
C
D
State whether the objects are "conductor" or "insulator". (answer should be given in small letters)
State whether the objects are "conductor" or "insulator". (answer should be given in small letters)
paper clip
State whether the objects are "conductor" or "insulator". (answer should be given in small letters)
pencil lead
State whether the objects are "conductor" or "insulator". (answer should be given in small letters)
glass plate
State whether the objects are "conductor" or "insulator". (answer should be given in small letters)
mercury
State whether the objects are "conductor" or "insulator". (answer should be given in small letters)
silver necklace
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