Metabolism and Energy

What type of energy is associated with an object in motion?

• potential

• kinetic

• chemical

• electric

Which of the following is an example of potential energy?

• A rolling ball

• A burning candle

• A book on a shelf

• A moving car

Which method of heat transfer involves the movement of heat through direct contact between molecules?

• Convection
• Radiation
• Evaporation
• Conduction

What type of heat transfer is primarily responsible for the warmth you feel from the sun?

• Conduction
• Radiation
• Convection
• Insulation

What is latent heat?

• Latent heat is the temperature at which a substance boils.
• Latent heat is the energy released when a substance freezes.
• Latent heat is the heat energy that increases the temperature of a substance.
• Latent heat is the heat energy required for a substance to change its phase.

When water freezes into ice, what happens to the latent heat?

• The latent heat remains unchanged during freezing.
• The latent heat is absorbed from the environment.
• The latent heat is converted into kinetic energy.
• The latent heat is released into the environment.

Which of the following is an example of a chemical reaction?

• Crushing a can

• Melting ice

• Burning paper

• Boiling Water

What happens to water when it undergoes a physical change?

• Water changes its state (solid, liquid, gas) without changing its chemical composition.
• Water changes its chemical composition during a physical change.
• Water remains unchanged in all states regardless of temperature.
• Water cannot change its state without heat.

What is a calorie in terms of energy?

• A unit that measures the amount of water in the body

• A unit that measures the amount of fat in the body

• A unit of energy required to raise the temperature of 1 gram of water 1 degree Celsius

• A unit of energy required to raise the temperature of 1 kilogram of water 1 degree Celsius

Which factor does not directly affect your Basal Metabolic Rate (BMR)?

• Age
• Gender
• Height

• Activity level