PS.5.1.3 (5.P.3.2) #3 Schoolnet (Conductors/Insulators)

Which best explains why the handles of many cooking pans are made of

plastic?

• Plastic melts easily.

• Plastic freezes easily.

• Plastic is a poor conductor of heat.

• Plastic is a good conductor of heat.

Glass does not melt easily. Which is the best example of a practical use

for glass that takes advantage of this characteristic?

• a candle in a glass container

• a car windshield made of glass

• a greenhouse made of glass

• a house door made of glass

Which best explains why a blacksmith must heat iron before shaping it?

• Heating iron makes it softer.

• Heating iron makes it harder.

• Heating iron changes its color.

• Heating iron changes its texture.

Tags

NGSS.MS-PS1-4

In art class, the students watch a video about creating glass art. Which

statement best describes how glass is shaped into a vase?

• Glass is melted and is more flexible to shape.

• Glass is frozen and is more flexible to shape.

• Glass is melted and is less flexible to shape.

• Glass is frozen and is less flexible to shape.

Tags

NGSS.MS-PS1-4

Dylan will be hiking on a sunny day. What type of container should he

store his water in if he wants it to stay cold?

• a metal bottle, because metal radiates heat

• a metal bottle, because metal easily conducts heat

• a thick plastic bottle, because plastic conducts heat

• a thick plastic bottle, because plastic does not easily conduct heat

Tags

NGSS.MS-PS3-3

Sue is building a bike with a metal frame in a warm, sunny area. Which

material would be best for Sue to use for the grips on the handlebars so

that her hands do not get too hot?

• silver metal, because silver reflects heat, and metal conducts heat

• black metal, because black absorbs heat from the sun, and metal

  does not conduct heat

• white rubber, because white reflects heat, and the rubber does not heat up quickly

• black rubber, because black reflects heat from the sun, and rubber does not conduct heat

Tags

NGSS.MS-PS3-3

NGSS.MS-PS3-4

Plastic does not conduct heat like many metals. Which product made

from plastic best takes advantage of this characteristic?

• table

• a cooler

• bucket

• hairbrush

Tags

NGSS.MS-PS3-3

On a hot day in the sun, why does Robert use a foam can holder to keep

his drink cool?

• Foam insulates the cold drink.

• Foam reflects cold air from the can.

• Foam reflects heat from the sun off the can.

• Foam conducts heat between the can and the air.

Tags

NGSS.MS-PS3-3

Emma fills a wooden box and a plastic container of the same size and

thickness with equal amounts of ice. She wants to determine which

material will keep the ice frozen the longest. Which best explains the

results of her experiment?

• The plastic container works best because plastic is a good insulator from heat.

• The plastic container works best because plastic is a good conductor of heat.

• The wooden box works best because wood is a good insulator from heat.

• The wooden box works best because wood is a good conductor of

  heat.

Tags

NGSS.MS-PS3-3

Joann fries an egg each morning in a metal frying pan with a rubber-

coated handle. Which best explains why the handle of the frying pan is

coated with rubber?

• Rubber makes the pan lighter.

• Rubber makes the pan prettier.

• Rubber is cheap to manufacture.

• Rubber is a poor conductor of heat.

Tags

NGSS.MS-PS3-3