Uneven Heating

Sunscreen works by:

• Blocking or absorbing UV rays from the sun

• Increasing the skin's sensitivity to sunlight

• Reflecting visible light only

• Moisturizing the skin to prevent burns

How and why does Earth's surface heat unevenly?

• Because the Sun's rays hit different parts of Earth at different angles and Earth's surface is made of different materials.

• Because the Sun shines equally on all parts of Earth at all times.

• Because Earth's surface is flat and smooth everywhere.

• Because the Moon blocks sunlight from reaching some areas.

1. ____________

• Conduction, Direct Contact

• Radiation, No Contact

• Convection, Fluid Movement

• Insulation, Heat Block

Look at the diagram of a house with arrows showing hot air rising and cool air sinking. What type of heat transfer is being demonstrated?

• Conduction

• Convection

• Radiation

Insolation: ______ energy from the Sun.

• Light energy from the Sun

• Sound energy from the Sun

• Chemical energy from the Sun

• Mechanical energy from the Sun

Incoming wavelength: ________

• ultraviolet

• infrared

• microwave

• radio

What objects cause the light interaction called Absorption?

Color: _______ colors _______ more heat than _______ colors.

Direct/Indirect Heat Source: _______ heat = _______ concentrated light.

Joule: ________ of heat.

• Unit

• Source

• Form

• Effect