asset

Pervez wanted to copy the shape of a key and so pressed the key on an object for 10 seconds. The shape of the key could then be seen on the object as shown in the figure below.

Which of the following could the object be made of?

• A

  metal

• B

  wax

• C

  glass

• D

  stone

A class had a torn umbrella. Which of the following materials that the teacher gave them, should they use to repair the umbrella?

• A

  A piece

  from an old raincoat

• B

  A piece of

  newspaper

• C

  A piece of

  cardboard

• D

  A piece of

  silk cloth

Which of the following is TRUE about maps?

Maps are ____________________________.

• A

  only

  made to show different countries

• B

  only made

  from satellite photographs

• C

  always

  made from travellers' memories

• D

  often made of

  whole cities or even streets

Vaibhav wants to check if a coin dropped in a glass of water takes a longer time to reach the bottom than in a glass of oil.

He needs to use 2 similar glasses. What kind of glasses should he take for the experiment?

• A

  Short glasses

  so that he can finish the experiment fast.

• B

  Tall glasses

  so that the coin can travel a longer distance in them.

• C

  Broad glasses

  so that more coins can be dropped at the same time.

• D

  Narrow

  glasses so that he can easily see the coin reaching the bottom.

What is TRUE of water and a sheet of glass?

• A

  Light can

  pass through both of them.

• B

  Light cannot

  pass through water or glass.

• C

  We can make

  wall mirrors with both of them.

• D

  We cannot

  make mirrors with water or glass.