Science Form 2 KSSM Topic 9

Which of the following is true about temperature?

• Temperature is the amount of heat in a substance.

• Temperature is the amount of matter in a substance.

• Temperature is the degree of hotness in a substance.

• Temperature is the amount of energy in a substance.

Which of the following is not true about heat?

• Heat is a form of energy.

• Heat cannot be measured.

• Heat cannot be seen.

• Heat can be transferred through vacuum.

What is the S.I. unit used to measure heat?

• Celsius

• Kelvin

• Joule

• Newton

Diagram below shows three beakers containing different volume of water at the same temperature. The correct sequence of the beakers in the order of increasing amount of heat content is

• X, Y, Z

• Z, Y, X

• X, Z, Y

• Y, X, Z

Which of the following material is most suitable to use as a heat insulator at the wall of ice box?

• Wood

• Polystyrene

• Plastic

• Aluminium

Diagram below shows a coastal area during the night. Which of the following gives the correct flow of air at the moment shown in the diagram?

• T → V

• T → S

• S → U

• U → V

Diagram shows an experiment conducted to investigate the transfer of heat through different substances. The rods are heated until all the thumbtacks fall off the rods. The time taken for each thumbtack to fall o its respectively rod is recorded. Arrange the rod based on the time taken for thumbtack to fall in ascending order.

• Copper, aluminum, iron, glass

• Iron, glass, copper, aluminum

• Glass, iron, aluminum, copper

• Aluminum, copper, glass, iron

Which surface is the best heat reflector?

• Black surface

• Blue surface

• Red surface

• White Surface

A dented ping pong ball does back to its original shape when put in hot water. Which of the following statement is not true?

• The number of air particle increases

• The air particles move faster

• The distance between the air particles increases

• The air in the ping pong ball expands

Which of the following is correct about conduction?

I. The process of heat transfer is faster than convection

II. The process of heat transfer is slower than convection

III. Occurs in solid

IV. Occurs in vacuum

• I and II only

• I and III only

• II and III only

• II and IV only