9.0 HEAT FORM 2 KSSM

The following diagram shows the position of a metal ball when passed through a ring before and after heating the metal ball.

Which of the following statement explains the phenomenon shown correctly?

• The size of particles in metal ball increases.

• The space between particles in metal ball increases.

• The number of particles in metal ball decreases.

• The volume of particles in metal ball decreases.

The following diagram shows an activity carried out to show the effect of heat flow. What can be observed when the flask is covered with student’s hands?

• The red ink disappeared.

• The red ink move upwards.

• The red ink move downwards.

• The red ink move downwards then move upwards.

The following diagram shows an activity carried out to study the effect of heat on a liquid, P. The final level of liquid P is higher. Why did this happen?

• The size of particles increases

• The size of particles decreases

• The density of liquid P increases

• Volume of liquid P increases

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 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 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