Energy

During which process does heat transfer occur because of density differences?

• conduction

• convection

• radiation

• reflection

The diagram below shows a laboratory box used to demonstrate the process of convection in the atmosphere. Which diagram has arrows that show the direction of airflow that occurs when the candle is burning?

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The primary method of heat transfer in the solid iron bar is

• convection

• conduction

• radiation

• absorption

Which statement best explains why water in a glass becomes colder when ice cubes are added?

• The water changes into ice

• Heat flows from the water to the ice cubes

• Water is less dense than ice

• Ice has a higher specific heat than water

Which statement best describes the energy transfer?

• The meltwater is a heat source and the surrounding air is a heat sink.

• The meltwater and ice cube are both heat sources.

• The ice cube and surrounding air are both heat sources.

• The ice cube is a heat sink and the surrounding air is a heat source.

Most of the energy from the light sources was transferred to the sand by the process of

• conduction

• convection

• radiation

• absorption

In which list are the forms of electromagnetic energy arranged in order from longest to shortest wavelength?

• gamma rays, x rays, ultraviolet rays, visible light

• radio waves, infrared rays, visible light, ultraviolet rays

• x rays, infrared rays, blue light, gamma rays

• infrared rays, radio waves, blue light, red light

A person in NYS worked outdoors in sunlight for several hours on a day in July. Which type of clothing should the person have worn to absorb the least electromagnetic radiation?

• dark colored with a rough surface

• dark colored with a smooth surface

• light colored with a rough surface

• light colored with a smooth surface

Which process transfers energy primarily by electromagnetic waves?

• conduction

• convection

• radiation

• evaporation

Which transfer of energy occurs mainly through the process of convection?

• Electromagnetic energy transferred from the Sun to the Moon

• Solar energy transferred through space to Earth's surface

• Heated air in the lower atmosphere transferred upward by density differences

• Heat from radioactive decay transferred by molecular collisions to surrounding mantle rock