แบบทดสอบความร้อน

When standing near a stove, we feel hot. What type of heat transfer is this?

• Conduction

• Convection

• Radiation

• Heat Emission

Why must the railway be laid with gaps between each rail?

• For convenience in construction

• To save costs in laying the rails

• To reduce noise when the train runs

• To prevent the expansion or contraction of metal

Which of the following is not a benefit from the expansion-contraction of substances when gaining or losing heat?

• To stretch high-voltage wires slightly

• Thai-style houses have high under-houses, gables, and roofs

• Using black plastic as a handle for a pan

• Leaving a small gap at the joints of concrete roads

Which explains why substances expand when heated?

• Because the number of particles increases

• Because the size of the particles increases

• Because the particles are farther apart

• Because the mass of the substance increases

What happens when a substance is heated?

• The kinetic energy of the particles decreases

• The attractive force between particles decreases

• The particles of

What happens when matter is heated?

• The kinetic energy of the particles decreases

• The attractive forces between the particles decrease

• The particles of the substance are closer together

• The particles of the substance move slower

Which substance will have the highest temperature?

• Water

• Aluminum

• Iron

• Copper

Which substance will have the lowest temperature?

• Water

• Aluminum

• Iron

• Copper

Which change is an endothermic process?

• Water turns into ice

• Clouds turn into rain

• Water droplets form on the side of a glass

• Dry ice turns into gas

What does thermal equilibrium mean?

• Two substances have equal mass and equal thermal energy

• Two substances transfer thermal energy from the one with greater mass to the one with lesser mass

• Two substances transfer thermal energy