Understanding Heat and Temperature

What is the primary difference between heat and temperature?

• Heat is measured in Celsius, while temperature is measured in Joules.

• Heat is a measure of energy, while temperature is a measure of how hot or cold something is.

• Heat can only be transferred, while temperature can only be measured.

• Heat and temperature are the same and can be used interchangeably.

How does a thermometer measure temperature?

• By counting the number of particles in an object.

• By measuring the expansion or contraction of a liquid inside it.

• By detecting the color of an object.

• By measuring the weight of an object.

Which unit is commonly used to measure heat?

• Fahrenheit

• Kelvin

• Celsius

• Joule

Which of the following statements is true about heat transfer?

• Heat is transferred from a hotter body to a colder body.

• Heat transfer does not depend on temperature difference.

• Heat can only be transferred through direct contact.

• Heat is transferred from a colder body to a hotter body.

In the activity with powdered drink, which water temperature caused the fastest dissolution?

• Hot water

• Tap water

• Cold water

• All temperatures had the same effect

What happens to the kinetic energy of particles when heat is absorbed by an object?

• Kinetic energy is converted into potential energy.

• Kinetic energy decreases and particles move slower.

• Kinetic energy remains unchanged.

• Kinetic energy increases and particles move faster.

What is the relationship between temperature and kinetic energy?

• Temperature is inversely proportional to kinetic energy.

• Temperature and kinetic energy are unrelated.

• Temperature is the square of kinetic energy.

• Temperature is directly proportional to kinetic energy.

What is thermal expansion?

• The decrease in volume of a substance due to an increase in temperature.

• The increase in volume of a substance due to an increase in temperature.

• The increase in volume of a substance due to a decrease in temperature.

• The change in phase of a substance from solid to liquid.

Which of the following is NOT a phase of matter?

• Solid

• Liquid

• Gas

• Energy

What is the effect of heat on the phases of matter?

• Heat causes all matter to become solid.

• Heat can cause phase changes such as melting and evaporation.

• Heat only affects gases.

• Heat has no effect on the phases of matter.