Class Objective: Today we will discover why we experience seasons and yearly changes in weather.
Homework assignment: Students will interview an adult they know and ask two questions.
1. What are the reasons for the seasons?
2. Why is it warmer in the summer and cooler
in the winter?
Students need to write the responses from their interview down and be ready to discuss their results.
Introduce the reasons behind the seasons and talk about some of the misconceptions about the seasons.
Get ready to explore:
Have you ever wondered why it's warmer in the summer and colder in the winter? Let's find out...
In your journal, answer these questions and define these terms after viewing this website:
(HINT: READ ALL QUESTIONS BEFORE AND AFTER VIEWING WEBSITES)
Seasons Chart and Glossary
1--What causes the seasons?
2--What is the tilt (angle) of the Earth?
3--What does solstice mean? When do those occur?
4--What does equinox mean? When do those occur?
Are the seasons the same throughout the world? Go to this website to find out:
5--If it is summer in Utah, what season is it in Argentina? Why?
6--In the northern hemisphere (Utah) the Earth is closer to the sun in the summer. That's why it's warmer. True or False
7--What would happen if the Earth had no tilt (0 degrees)?
8--What is an "axis"?
9--What planet has a 98 degree axis tilt?
Watch the simulation. Go to this website and click on "Seasons" then answer the following questions:
10--During our summer solstice, which pole (north or south) is pointed toward the sun?
11--What is the date of our summer solstice?
12--During our autumnal equinox, what occurs with the length of day and night?
13--What is the date of our autumnal (fall) equinox?
14--During our winter solstice, which pole (north or south) is pointed toward the sun?
15--What is the date of our winter solstice?
16--During our vernal equinox, what occurs with the length of day and night?
17--What is the date of our vernal (spring) equinox?
Students need to write a 1/2 page letter to the adult they interviewed. They need to explain to the adult why their answers to the questions were right or wrong. They need to explain the reasons behind the seasons and clear up any misconceptions that the adult had.
Last, let's experiment a bit. Go to this website. Click on "Seasons Interactive" and answer the following:
Set the angle of inclination for Venus or Uranus to see what happens to the length of sunlight and the average daily temperature for each.
19--What would happen to our seasons and temperature if we had an angle like that of Venus'?
20--What would happen to our seasons and temperature if we had and angle like that of Uranus'?
Earth during winter, spring, winter, fall
Venus during winter spring