Weather and Climate- Day 2

The Sun’s EnergyCh. 17

Objectives

• Describe the movement of _________ due to differences in ____________________

• ________________ the absorbance and reflectance of the sun’s energy on Earth

• ____________________temperature variations over ________________________

Heating of the Atmosphere

• Heat vs. temperature• ___________ is the ________________

transferred from one object to another due to differences in __________________.

• Bottom line: ___________________________ ______________________________________ ______________________________________

Heating of the Atmosphere

• The ____________ of the atmosphere comes from ______________________

• The solar energy is transferred to Earth through ____________

• When radiation hits an object, ____________ things happen– 1. some radiant energy is ____________ – 2. some radiant energy is ____________________ ____

substances like water and air– 3. some radiant energy _________________ _______ the

object without being absorbed or transmitted

Heating of the Atmosphere• Take a look at Figure 12 on page

486 to answer the following questions1. How much of the Sun’s energy

that reaches Earth’s atmosphere is reflected back into space? (add together the amount that is backscattered to space, the amount reflected from clouds, and the amount reflected by the land-sea surface)

2. How much of the Sun’s energy is absorbed by Earth’s atmosphere and clouds?

3. How much of the Sun’s energy is absorbed by the land and sea?

Heating of the Atmosphere

• If we did not have gases to absorb solar radiation, Earth would not be a place where we could live

• This heating of the lower layer of the atmosphere from radiation absorbed by heat absorbing gases is called the ______________________________

• … so just like plants grow better in a greenhouse, all life on Earth is able to flourish because of the greenhouse effect… but too much heating up can have problems too…

Heating of the Atmosphere• The temperatures we experience are due to the

_________________________of the atmosphere _____________and _____________________ ____________ ___ .

• Land _______________________ ________ _____ than water• Land also reaches _________________________________ than

water• The temperature of the land and water influences the

temperature of the ________________________ • This explains why ___________________ experience

____________ temperature variations than cities near large _______________________

Think about it!

• City A is located on the Outer Banks of NC and City B is located inland. Which city would experience greater variations in temperature and why?

Check-in Questions1. What causes the transfer of energy in the from of heat from

one object to another?2. What is the greenhouse effect? How does it affect life on

Earth?3. Complete this chart

4. Complete the following sentence: Land heats ______________ than water.

5. As a result of what you said in #4, where are temperature variations greater? (over land or over water)

Amount of the Sun’s energy that reaches Earth’s atmosphere that is reflected back into space

Amount of the Sun’s energy absorbed by Earth’s atmosphere and clouds

Amount of the Sun’s energy absorbed by the land and sea