How Much Sunshine? Investigation 3, Part 1 Objectives *****I can calculate the amount of sunlight hours there are on different days of the year. I can.

How Much Sunshine?Investigation 3, Part 1

Objectives*****I can calculate the amount of sunlight

hours there are on different days of the year.I can explain where the Earth tilts towards

and how it affects sunlight hours.I can explain what influence soar angle has

on heating the earth.I can explain beam spreading.

Quick Write(Write in your Interactive Notebook.)

December 21

Do we have fewer than 24 hours?Fewer hours of

sunshineLight + dark hours =

24

Shortest Day

Why would someone say that?

Longest Day?If it’s true that there is a shortest day, is

there also a longest day of the year?Yes, June 21

Today’s Sunlight

How many hours of sunlight will we have today?

Example: Sunrise 6:24 a.m. Sunset 6:44 p.m.

Calculate the amount of sunlight.

Sunrise/Sunset Time for 2000Table is the

sunrise and sunset times

Times were recorded on the 21st each month

Hours of DaylightCalculate the hours and minutes of daylight

on the 21st of each month.Make a bar graph to show the amount of

daylight month by month.

DO NOT FORGET TO LABLE YOUR GRAPH!!!! REMEMBER TAILS! T-TITLE, A-AXIS, I-

INTERVALS, S-SCALE.

Hours of DaylightCopy the hours of

daylightMake a bar graph to

show the amount of daylight month by month

Remember that 60 minutes = 1 hour

Jan 9:59

Feb 11:02

Mar 12:12

Apr 13:26

May 14:23

Jun 14:47

Jul 14:22

Aug 13:23

Sept 12:11

Oct 10:59

Nov 9:58

Dec 9:33

Review the Graph

0:00

2:24

4:48

7:12

9:36

12:00

14:24

16:48

Ho

urs

of

Day

lig

ht

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug Sep Oct

Nov

Dec

Month

Review the Graph

0:00

2:24

4:48

7:12

9:36

12:00

14:24

16:48

Ho

urs

of

Day

lig

ht

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug Sep Oct

Nov

Dec

Month

The amount of daylight over a year in Berkeley?

Review the Graph

0:00

2:24

4:48

7:12

9:36

12:00

14:24

16:48

Ho

urs

of

Day

lig

ht

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug Sep Oct

Nov

Dec

Month

Days get longer -

Jan to JunDays get shorter -

Jun to Dec

Review the Graph

0:00

2:24

4:48

7:12

9:36

12:00

14:24

16:48

Ho

urs

of

Day

lig

ht

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug Sep Oct

Nov

Dec

Month

Longest Day? Shortest Day?

Review the Graph12 hours of daylight?

Review the Graph

0:00

2:24

4:48

7:12

9:36

12:00

14:24

16:48

Ho

urs

of

Day

lig

ht

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug Sep Oct

Nov

Dec

Month

How many hours of sunlight on the longest day?

More than 14 hours

Review the Graph

0:00

2:24

4:48

7:12

9:36

12:00

14:24

16:48

Ho

urs

of

Day

lig

ht

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug Sep Oct

Nov

Dec

Month

How many hours of sunlight on the shortest day?

More than 9 hours

Sunlight & Seasons

What season is the longest day?

• What season is the shortest day?

Global Daylight Discussion QuestionsWhen one location on Earth has 14 hours of

daylight, is all the rest of the world having 14 hours of daylight as well?

Is the longest day of the year the same length?

Is the longest day of the year the same day?

Global DaylightAre the longest days always in the summer?

Are the shortest days always in the winter?

ReadingTurn to pg 12

Read “Wendy and Her

Worldwide Weather

Watchers”.Answer the Think

Questions on page 16.