10.3 Energy Transfer

As water is heated by the sun, it becomes less dense and rises As water is heated by the sun, it becomes less dense and rises. What causes the decrease in the density of warming water? A. The water particles move faster, causing the water to expand. B. The water particles move slower, causing the water to expand. C. The water particles move faster, causing the water to contract. D. The water particles move slower, causing the water to contract.

Answer… A

At night, the air is usually cooler than it is during the day At night, the air is usually cooler than it is during the day. Which term is best defined as a measure of how hot or cold something is? A. heat B. temperature C. kinetic energy D. thermal energy

Answer… B

During the day, the portions of Earth’s surface that receive sunlight absorb energy in the form of heat. During the night, Earth’s surface radiates this energy back into space. What is the main form of radiation released by Earth at night? A. visible light B. gamma rays C. infrared radiation D. ultraviolet radiation

Answer… C

Different areas of Earth’s oceans receive different amounts of energy in the form of heat, resulting in ocean currents and weather patterns. What is the main source of this energy? A. kinetic energy from tides B. kinetic energy from ocean currents C. energy transfer within Earth’s crust D. electromagnetic radiation from the sun

Answer… D

Conduction happens as energy flows from a warmer object to a cooler object. Which of the following is an example of conduction? A. electromagnetic radiation transfers energy from the sun to Earth B. warmer air is pushed upward and out of the way by cooler air C. cooler air molecules come in contact with warm ground, causing energy to be passed to the air D. dense water sinks to the ocean floor and less dense water moves to the ocean surface

Answer… C

What are the three mechanism in which energy is transferred through Earths system?

Answer… Radiation Convection Conduction