Intro to Season on Earth

Bill Nye - Seasons

Watch the video and answer the Checkpoint questions.

Let's stop for a moment to check for understanding.

Multiple Choice

The axis of the earth is tilted _________ degrees.

• 25.3

• 45

• 23

• 23.5

Multiple Choice

The southern hemisphere is another name for the southern____________________of the earth.

• part

• half

• end

• continent

Let's stop for a moment to check for understanding.

Multiple Choice

A pendulum can be used to show the ____________________of the earth.

• gravity

• rotation

• revolution

Open Ended

A____________________is almost 365 and 1/4 days long.

Multiple Choice

The tilt of the ____________________ causes the sun to appear in the sky at a slightly different spot every day.

• earth

• sun

• axis

• sky

Final Checkpoint!

Multiple Choice

The____________________are the longest days of the year.

• solstices

• equinoxes

Multiple Select

____________________has seasons because it’s axis tilted, much like the earth.

• Mars

• Earth

• Venus

• Sun

• Both Earth and Mars

Open Ended

Three things I learned watching this video:

1)

2)

3)

Seasons on Earth

Why do we have different seasons on earth?

Learning objectives

Recall that there is day and night because Earth spins on an axis.

Recall that Earth orbits the sun once a year.

To explain why days are longer in summer by discussing the angle of the earths tilt.

Multiple Choice

How long does it take earth to make one revolution around the sun?

• 12 hours
• 24 hours 
• 365 days
• 30 days

Multiple Choice

The earth orbits around the _________

• sun
• moon
• other planets
• solar system

Multiple Choice

How long is a day on earth?

• 22 hours

• 365 days

• 12 hours

• 24 hours

Multiple Choice

What causes more heat,  indirect sunlight or direct sunlight?

• indirect
• direct

Multiple Choice

The hemisphere where you live

• northern
• southern

Multiple Choice

Why is the Equator warmest?

• Because it is closest to the sun.
• Because it receives the most direct sunlight
• Because no clouds form here.
• Because it is far from the sun

The Earths axis and tilt

• Our Earth is tilted at 23.5^o along it's axis

• The earth is constantly rotating and we know it takes 24 hours to make a full rotation (night-day).

• This imaginary line (axis) runs through the centre of earth going from north to south pole.

Multiple Choice

What passes through the North and South pole?

• Sunlight
• Moonlight
• Water
• Earth's axis

Multiple Choice

Which of the following means to turn on an axis?

• relax
• rotate
• revolve 
• return

Multiple Choice

The Earth's axis is tilted _____ degrees.

• 23.5
• 25.3
• 30.2
• 24

What does this have to do with seasons?

• During the month of June the northern hemisphere (top half) of earth is pointed toward the sun.

• This causes an increase in termperature and amount of daily sunlight for countries here (this is their summer).

• (Meaning the southern hemisphere is experiencing the opposite - winter)

... continued

• During the month of December the southern hemisphere (bottom half) and south pole point towards the Sun.

• This causes an increase in termperature and amount of daily sunlight for countries here (this is their summer).

• (Meaning now the opposite for the northern hemisphere - winter)

Hemispheres and equator

• The equator runs horizontally through the centre of Earth.

• Anything above the equator line is known as the northern hemisphere (including the north pole)

• Anything below this line is known as the southern hemisphere (including the south pole)

Multiple Choice

In winter, the axis of the earth is pointed away or toward the sun?

• towards
• up
• down
• away

Multiple Choice

When it is day on one side of the Earth, what is it on the other side of the Earth?

• Summer
• Winter
• Night
• Day

Multiple Choice

What happens when the area in which you live tilts away from the sun?

• It is summer.
• It is spring.
• It is winter.
• It is fall.

Multiple Choice

At position A, which hemisphere would have summer?

• Northern hemisphere
• Southern hemisphere

Equinox

This is where there is an equal amount of day and night time (typically in March).

Multiple Choice

The term equinox means....

• equal amount of day light and equal amount of night
• Equal amount of winter and summer
• Equal amounts of hot dogs for everyone
• The longest day of the year

Earth/Sun System: Seasons

MS.ESS.1.1: Students can identify the impact of the Earth and Sun relationship.

Poll

Which Season is your favorite?

• Winter

• Spring

• Summer

• Fall

Direct vs. Indirect Light

• The way light travel and how it hits the surface of our planet impacts the seasons.

• LIght travels in straight lines and it is more radiant and its effects stronger when the line hits a surface in a straight angle.

• Also, the effects of the radiation from the sunlight diminish when it hits the surface in an angle.  

Multiple Choice

What is the elliptical line circling the Sun represent?

• Rotation

• Revolution

• Orbit of the Earth

• Orbit of the Sun

Seasons: How does the Earth-Sun System affect seasons?

• The distance between Earth and the sun stays relatively constant throughout the Earth’s orbit. 

• Solar energy travels in a straight line from the sun and hits different parts of the curved Earth at different angles — more directly at the equator and less directly at the poles. 

• The Earth’s rotation axis is tilted with respect to its orbital plane around the sun. Earth maintains the same relative orientation in space, with its North Pole pointed toward the North Star throughout its orbit.

Multiple Choice

Refer to the diagram. Why are our (Norther Hemisphere) summer months the warmest?

• Closer to the Sun

• Further from the Sun

• Tilted toward the Sun

• Tilted away from the sun

Multiple Choice

1. What angle is Earth’s axis tilted at?

• 20 degrees

• 21.5 degrees

• 23 degrees

• 23.5 degrees

How does the tilt of the Earth impact our seasons?

• Because the Earth’s axis is tilted, the most direct and intense solar energy occurs over the summer months, and the least direct and intense solar energy occurs over the winter months. 

• The change in season at a given place on Earth is directly related to the orientation of the tilted Earth and the position of Earth in its orbit around the sun because of the change in the directness and intensity of the solar energy at that place over the course of the year. 

Multiple Choice

According to the diagram, when does fall officially begin?

• June 22

• Sept. 23

• Dec. 22

• March 21

Multiple Choice

Refer to the diagram: When is the Earth the furthest from the Sun and what is the distance?

• January, 147 million km

• July, 152 million km

Seasons Overview: Note taking

• Get your Science NB out! Date and topic on the page.

• Take notes during the following video.

• 3 to 5 facts, 2-4 big ideas, and at least 2 questions.

Open Ended

3-2-1 Response: 3 facts, 2 big ideas, 1 question

Multiple Choice

It divides the earth into ___________ and ___________ hemispheres.

• eastern and western

• northern and southern

Multiple Choice

What imaginary line is drawn around the earth’s center and separates the Northern & Southern hemispheres?

• equator

• axis

• prime meridian

Multiple Choice

The hemisphere where you live 

• equator
• southern
• northern
• eastern

Multiple Choice

How long does it take earth to make one revolution around the sun?

• 12 hours
• 24 hours 
• 365 days
• 30 days

Multiple Choice

Day & night are caused by the ______________ of earth on its axis

• revolution
• orbit
• rotation
• tilt of the axis

Multiple Choice

What are the reasons for the season?

• Earth's tilt & rotation
• Earth's tilt & revolution
• Earth's rotation & rovolution
• Earth's tilt & resolution

Multiple Choice

What happens when the area in which you live tilts away from the sun?

• It is summer.
• It is spring.
• It is winter.
• It is fall.

Multiple Choice

Why does the area around the equator stay the same temperature all year?

• The equator rotates slower than the poles.
• The equator remains the same distance from the sun.
• The equator always receives direct sunlight.
• The equator has 18 hour days.

Multiple Choice

Which season is taking place in the Northern Hemisphere in Position 1?

• Winter
• Spring
• Summer
• Fall

Multiple Choice

Which season is taking place in the Northern Hemisphere in Position 3?

• Winter
• Spring
• Summer
• Fall

Multiple Choice

Which  of the following best describes the tilt of the earth during the spring and fall equinoxes?

• The earth is tilted away from the sun (Northern hemisphere)
• The earth is tilted neither toward or away from the sun (tilt is side to side)
• The earth is tilted toward the sun (Northern hemisphere)
• The earth is not tilted during spring and fall

Multiple Choice

Which season is taking place in the Northern Hemisphere in Position 4?

• Winter
• Spring
• Summer
• Fall

Multiple Choice

Which season is taking place in the Northern Hemisphere in Position 2?

• Winter
• Spring
• Summer
• Fall