2nd grade materials and their properties

Question 1

An old wooden shed is taken apart. How could the planks be reused?

• A. Build them into a raised flower bed.
• B. Nothing can be made from used wood.
• C. Melt them into metal.
• D. Turn them into glass.

Question 2

Arjun builds a tower from 12 building bricks, then takes it apart and uses every brick to build a bridge. How many bricks are in the new model?

Answer 

Question 3

True or false? Glass cannot be bent at room temperature without breaking.

• A. True
• B. False

Question 4

Which of these can be stretched and then spring back to its shape?

• A. a glass marble
• B. a stone
• C. a wooden ruler
• D. an elastic band

Question 5

Which of these is usually made of fabric?

• A. a wooden table
• B. a garden fence
• C. a curtain
• D. a drinking glass

Question 6

Bottles can be glass or plastic. Why might a picnic use plastic bottles?

• A. Plastic is stronger than metal.
• B. Plastic keeps drinks hot for ever.
• C. Plastic is heavier.
• D. Plastic is lighter and does not shatter if dropped.

Question 7

Three of these are usually made of wood. Which one is NOT?

• A. a pillowcase
• B. a cricket or baseball bat
• C. a garden fence
• D. a wooden table

Question 8

Is this material natural or human-made: wool?

• A. natural
• B. human-made

Question 9

Where does this material come from: a woolly jumper (sweater)?

• A. a sheep's fleece
• B. wood from trees
• C. the fluffy seed pods of a cotton plant
• D. clay baked in a kiln

Question 10

Which shape change is this: twisting a lid off a jar?

• A. squashing
• B. bending
• C. twisting
• D. stretching

Question 11

A model castle is made of 14 wooden blocks. Each block has a mass of 10 g. The castle is taken apart and rebuilt as a boat with all the same blocks. What is the mass of the boat?

Answer g

Question 12

Choosing materials: which statement is true?

• A. Cotton wool is good for a raincoat.
• B. Glass is a good material for a football.
• C. Paper is a poor material for an umbrella.
• D. Metal is best for a window you want to see through.

Question 13

Why are electrical wires made of copper covered in plastic?

• A. Copper is see-through
• B. Plastic conducts electricity better than copper
• C. Copper is magnetic and plastic is shiny
• D. Copper conducts electricity; plastic insulates for safety

Question 14

Which material is best for a raincoat?

• A. paper
• B. glass
• C. waterproof plastic-coated fabric
• D. cotton wool

Question 15

True or false? Stone is made in factories.

• A. True
• B. False

Question 16

Why are many toys and buildings made of small pieces joined together?

• A. Small pieces are always stronger than anything else.
• B. Small pieces are easy to carry and can make many different shapes.
• C. Pieces disappear if they are big.
• D. Big pieces cannot be made.