Unit 3 Lesson 2: Energy Transfer Lesson Review

What is the definition of radiation?

• Transfer of heat through direct contact

• Transfer of heat through electromagnetic waves

• Transfer of heat through fluid motion

• None of the above.

Fill in the blank: Convection is the transfer of heat through ______.

• direct contact

• electromagnetic waves

• motion

• radiation

What is the main source of energy for most processes at Earth's surface?

• The Sun

• The Moon

• Earth's core

• Ocean currents

What is the difference between temperature, thermal energy, and heat?

• Temperature is a measure of heat, thermal energy is the total energy, and heat is energy transfer.

• Temperature is energy transfer, thermal energy is a measure of heat, and heat is the total energy.

• Temperature is the total energy, thermal energy is energy transfer, and heat is a measure of heat.

• None of the above.

Describe what happens to a substance undergoing thermal expansion.

• It contracts

• It remains the same

• It expands

• It evaporates

What happens when two objects at different temperatures touch?

• Heat flows from the cooler object to the warmer one

• Heat flows from the warmer object to the cooler one

• No heat transfer occurs

• Both objects become the same temperature instantly.

Identify an example of convection in Earth's system.

• Ocean currents

• Sunlight

• Rock formation

• Wind patterns

Why can metal utensils get too hot to touch when you are cooking with them?

• They conduct heat

• They reflect heat

• They absorb moisture

• They are insulated

Predict: You are doing an experiment outside on a sunny day. You find the temperature of some sand is 28°C. You also find the temperature of some water is 25°C. Explain the difference in temperatures.

• Sand absorbs more heat

• Water absorbs more heat

• Both absorb the same amount of heat

• None of the above

Where does conduction occur on Earth?

• In the Earth's crust and to a lesser extent in the atmosphere and oceans.
• Primarily in the mantle.
• Only in the atmosphere.
• In the Earth's core only.