Lesson 2.1: Energy in Earth's Atmosphere

1. John is making a poster for a school project to show different types of heat transfer. What type of HEAT TRANSFER takes place from the Sun to Earth?

• Convection
• Expansion
• Conduction
• Radiation

2. Which of the following statements explains the ENERGY BUDGET on Earth?

• Most energy is made into food by plants.
• Earth's surface absorbs and reflects equal amounts of energy.
• Earth's surface reflects more energy than the atmosphere.
• The atmosphere absorbs more energy than Earth's surface.

3. What percentage of the Sun's radiation is reflected by clouds and other particles?

• 25%

• 20%

• 5%
• 50%

4. You place a metal fork in a hot piece of lasagna. After a few minutes, you TOUCH the end of the fork and notice it's hot. Which type of heat transfer caused this to happen?

• Radiation
• Conduction
• Convection
• Specific Heat

5. The picture shows WATER BOILING in a pot. What method of heat transfer is the boiling water?

• Radiation
• Conduction
• Convection
• Specific Heat

6. The ozone layer absorbs energy and protects life on Earth, but some of it has been damaged! Which of these explains what happens when the OZONE LAYER IS DAMAGED?

• Fewer UV rays reach the Earth's surface.
• Fewer UV rays are absorbed by the atmosphere.
• More UV rays are reflected back toward space.
• Other parts of the atmosphere make up for the damaged ozone layer.

7. Kathy was making chocolate-covered strawberries. After she dipped the strawberries in the hot, melted chocolate, she let it harden on the counter. She wanted to track the temperature of the chocolate and used the data to construct a graph showing the temperature changes. Which answer describes what happened to the TEMPERATURE of the chocolate as it hardened OVER TIME?

• The temperature increased over time.
• The temperature decreased over time.
• The temperature increased and then decreased over time.
• There was no change in temperature.

8. Heat is transferred DIRECTLY from one particle of matter to another through contact is the process of ___________________.

• Radiation
• Conduction
• Convection
• Warmer

9. Heat that is transferred by the MOVEMENT OF CURRENTS within a liquid or air is called _________________.

• Convection
• Conduction
• Radiation
• Specific Heat

10. _______________________ is the transfer of energy by ELECTROMAGNETIC WAVES.

• Convection
• Conduction
• Radiation
• Hot