Multiple Choice 1
Why are oven mitts NOT made out of metal?
a. Metal lets the heat through to your hand.
b. Metal is too expensive.
c. Metal is too heavy.
d. Metal isn’t very comfortable.
a. Metal lets the heat through to your hand.
A ________ can be built out of smaller pieces of _____.
a. House…………… wood
b. Skyscraper……… concrete and steel
c. Wall……………… brick
d. All of the above
d. All of the above
What’s so special about plastic? Why are so many toys made out of plastic?
Plastic is a material that has the property of being meltable. Unlike wood, plastic can be melted and poured into the same shape over and over again to make a lot of copies more quickly.
Which properties would you want your clothing to have if you were playing in the snow? I would want my snow clothes to be _________ and ________.
stiff, opaque, light, stretchy, waterproof, soft, heat-trapping, heavy, strong, absorbent
heat-trapping, waterproof, soft
does not absorb water
waterproof
Why do you need a metal pan to fry an egg on a hot sidewalk?
a. The pan will keep the egg from getting dirty.
b. The pan makes it easier to serve the egg.
c. The pan conducts heat from the sidewalk.
d. The pan absorbs heat from the sun.
c. The pan conducts heat from the sidewalk.
Which are properties of paper?
a. strong and stiff
b. flexible and foldable
c. heavy and hard
d. soft and clear
b. flexible and foldable
What are two ways you could change the properties of paper to make it stronger?
Folding it so it doesn’t bend as easily, and reinforcing with multiple pieces of paper.
Which properties would you want your clothing to have if you were running and jumping. I would want my running clothes to be _________ and ________.
stiff, opaque, light, stretchy, waterproof, soft, heat-trapping, heavy, strong, absorbent
light, stretchy, absorbent
to soak up liquid, like a sponge does
absorb
What do popsicles and plastic toys have in common?
a. Both of them can get very cold.
b. Both of them are liquids.
c. Both of them are made out of water.
d. Both of them can be melted into shapes.
d. Both of them can be melted into shapes.
Scientists invent new materials so that they can...
a. tell each other about them.
b. invent things to solve problems.
c. store the materials in their laboratories.
d. do as many experiments as possible.
b. invent things to solve problems.
What’s the difference between clothing that people wear when it’s cold compared to when it’s hot?
When it’s cold, people wear clothing that is __________ because __________. When it’s hot, people wear clothing that is __________ because____________.
When it’s cold, people wear clothing that is heat-trapping and soft because they want to stay warm and comfortable. When it’s hot, people wear clothing that is absorbent and opaque because they want to absorb the sweat and be protected from the sun
What is one example of a large structure that is made from smaller pieces?
A house/skyscraper/building/bridge/wall is one example of a large structure made from smaller pieces. It is made from pieces of wood/concrete/steel/bricks
you cannot see through it, such as with the walls of a building
opaque
Why was it easier to make plastic toys instead of wooden toys?
a. Plastic doesn’t need to be carved by hand.
b. Plastic doesn’t grow in the ground.
c. Plastic can be painted different colors.
d. Plastic doesn’t have bark that needs to be removed.
a. Plastic doesn’t need to be carved by hand.
Which properties would you want your clothing to have if you were swimming?
a. light
b. stretchy
c. opaque
d. all of the above
d. all of the above
Why would you need a metal pan to fry an egg on a hot sidewalk?
The heat in the hot sidewalk can travel through the metal pan more easily so that the egg can get hotter.
If you had to walk across hot pavement, which material would protect your feet the best?
a. cotton socks
b. Styrofoam shoes
c. metal shoes
d. barefoot (no material)
I chose _____________ because ______________.
I choose Styrofoam shoes because Styrofoam is very good at insulating. It will not let the heat from the sidewalk move through it quickly
a kind of material that heat easily travels through
conductor
If it’s really hot and sunny outside, you probably want to wear clothes that are...
a. waterproof.
b. heat-trapping.
c. see-through.
d. absorbent.
d. absorbent
Which is NOT a property of rubber?
a. bouncy
b. stretchy
c. absorbent
d. waterproof
c. absorbent
If you are designing winter boots, which material properties would you choose? You must choose 3 and explain why.
heavy, soft, see-through, absorbent, stiff, stretchy heat-trapping, waterproof
Winter boots should be soft on the inside and stiff on the outside because they need to be comfortable to wear but sturdy. They should be heat-trapping, because they need to keep me warm.
When you get into a car on a hot day, which would feel hotter, the metal door handle or the cloth seats? Why? The ___________ would feel hotter because that material is ___________ The ____________ would feel less hot because that material is _____________.
The metal door handle would feel hotter because that material is conductive. Heat moves quickly through metal so it will be hot when your hand touches it.
The cloth seats would feel less hot because that material is insulating. The heat does NOT move quickly through the material, so it won’t be as hot when you touch it.
a kind of material that heat does not easily travel through
insulator