5.02 Sun Basics

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19 questions

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Library

5.02 Sun Basics

Last updated about 2 hours ago

19 questions

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We've talked about the Sun in other units. What are some things you all ready know about the Sun?

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Heat is transferred one of 3 ways.  Match the definition to the correct term.

Other Answer Choices:

Heat is transferred indirectly in the form of waves or particles

Heat is transferred through molecular motion in a fluid (liquid, gas, or plasma)

Heat is transferred from one substance to another through direct contact

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Draggable item		Corresponding Item

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Question 11

00:46

Question 12

01:02

Question 13

02:31

Question 14

02:55

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The Sun also produces its own magnetic field.

Put the labels on the Sun's North and South poles.

Other Answer Choices:

South Pole

North Pole

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Question 17

00:24

Question 18

00:49

Question 19

01:20

Before we jump into Unit 5, please rate yourself on the Unit 5 objectives from 1 (just starting) to 5 (mastered it!)

You may need to scroll horizontally to see all options

	1 - getting started	2	3	4	5 - mastered it
Identify the regions of the Sun
Discuss the structure and composition of the Sun.
Explain how the Sun produces energy
Examine solar activity, such as sunspots and solar flares.
Give examples how solar activity affects the Earth

We've talked about the Sun in other units. What are some things you all ready know about the Sun?

The Sun is an average low mass star.

Think back to Unit 2 and the life cycles of low mass stars.

Put the likely stages of the Sun's life cycle in order.

Red Giant
Having run out of hydrogen, star fuses helium into carbon and the resulting energy causes the star to expand
Stellar Nebula
Formed in a cloud of gas and dust
Planetary Nebula
Glowing shell of gas and plasma around a dying star
White Dwarf
Hot, dense remnant of a star
Average Star
Fusing hydrogen into helium in its core

The images above show colorized X-ray images of the Sun over the course of March, June, September, and December 1999.

True or false: The surface of the Sun does not change throughout the year.

True

False

On the left is a colorized X-ray image of the Sun.

On the right is a visible light image of the Sun. Notice the dark spots on the visible light image.

Which conclusion could you make?

The dark spots are located at the areas of high X-ray activity.

The dark spots and the high X-ray activity are not related.

Heat is transferred one of 3 ways.  Match the definition to the correct term.

Other Answer Choices:

Heat is transferred indirectly in the form of waves or particles

Heat is transferred through molecular motion in a fluid (liquid, gas, or plasma)

Heat is transferred from one substance to another through direct contact

Use the interactive diagram above to explore the part of the Sun.

Then match the layers of the Sun's interior to its description

Draggable item		Corresponding Item
Convective Zone		Center of the Sun where nuclear fusion takes place
Core		Transports energy from the core to the convective zone through conduction
Radiative Zone		Outermost region where hot plasma carries energy toward the Sun's surface, cools, and sinks back down

Match the layers of the Sun's exterior to its description

Draggable item		Corresponding Item
Chromosphere		Visible "surface" of the Sun
Corona		Thin lower atmosphere of the Sun
Photosphere		Sun's upper atmosphere that extends for at least 2,000 km

The Sun's photosphere is covered with "granules" where the brighter regions indicate hot, rising gas and the darker regions indicate cooler, down-welling gas.

What type of energy transfer creates these "granules"?

Conduction

Radiation

Convection

How is the Sun's energy transferred to Earth?

Radiation

Convection

Conduction

Question 11

00:46

Question 12

01:02

Question 13

02:31

Question 14

02:55

The Sun also produces its own magnetic field.

Put the labels on the Sun's North and South poles.

Other Answer Choices:

South Pole

North Pole

However, the Sun is made of plasma, not solid rock and liquid metal, so its magnetic field behaves differently than the Earth's.

The plasma at the Sun's equator travels faster than the plasma at the Sun's poles, causing the magnetic field to become twisted.

The Sun's magnetic field functions differently than the Earth's.

True

False

Before we jump into Unit 5, please rate yourself on the Unit 5 objectives from 1 (just starting) to 5 (mastered it!) 

You may need to scroll horizontally to see all options

1 - getting started

2

3

4

5 - mastered it

Identify the regions of the Sun

Discuss the structure and composition of the Sun.

Explain how the Sun produces energy

Examine solar activity, such as sunspots and solar flares.

Give examples how solar activity affects the Earth

The Sun is an average low mass star.  

Think back to Unit 2 and the life cycles of low mass stars.

Put the likely stages of the Sun's life cycle in order.

Red Giant
Having run out of hydrogen, star fuses helium into carbon and the resulting energy causes the star to expand

Stellar Nebula
Formed in a cloud of gas and dust

Planetary Nebula
Glowing shell of gas and plasma around a dying star

White Dwarf
Hot, dense remnant of a star

Average Star
Fusing hydrogen into helium in its core

The images above show colorized X-ray images of the Sun over the course of March, June, September, and December 1999.

True or false: The surface of the Sun does not change throughout the year.

True

False

On the left is a colorized X-ray image of the Sun.  

On the right is a visible light image of the Sun. Notice the dark spots on the visible light image.

Which conclusion could you make?

The dark spots are located at the areas of high X-ray activity.

The dark spots and the high X-ray activity are not related.

Use the interactive diagram above to explore the part of the Sun.

Then match the layers of the Sun's interior to its description

Convective Zone

Center of the Sun where nuclear fusion takes place

Core

Transports energy from the core to the convective zone through conduction

Radiative Zone

Outermost region where hot plasma carries energy toward the Sun's surface, cools, and sinks back down

Match the layers of the Sun's exterior to its description

Chromosphere

Visible "surface" of the Sun

Corona

Thin lower atmosphere of the Sun

Photosphere

Sun's upper atmosphere that extends for at least 2,000 km

 
The Sun's photosphere is covered with "granules" where the brighter regions indicate hot, rising gas and the darker regions indicate cooler, down-welling gas.

What type of energy transfer creates these "granules"?

Conduction

Radiation

Convection

How is the Sun's energy transferred to Earth?

Radiation

Convection

Conduction

What interaction would occur between the following charges?

Positive & positive __________
Positive & negative __________
Negative & negative __________

What does a flowing electric current create?

Electric charge

Thermal energy

Magnetic field

What generates Earth's magnetic field deep inside the Earth?

Solid rocks

Gases

Liquid metals

What does the protective layer created by Earth's electromagnetism do?

Shields us from harmful radiation

Increases the gravitational pull

Protects us from meteors

However, the Sun is made of plasma, not solid rock and liquid metal, so its magnetic field behaves differently than the Earth's.

The plasma at the Sun's equator travels faster than the plasma at the Sun's poles, causing the magnetic field to become twisted.

The Sun's magnetic field functions differently than the Earth's.

True

False

Magnetic field lines are visible to the human eye.

True

False

What do the white closed magnetic field lines do?

Extend far into space

Loop around and close at the solar surface

Connect to different planets

What can happen when magnetic field lines interact with each other?

Coronal mass ejections (CMEs) and solar flares

New stars

Nothing

What does a flowing electric current create?

Electric charge

Thermal energy

Magnetic field

What generates Earth's magnetic field deep inside the Earth?

Solid rocks

Gases

Liquid metals

What does the protective layer created by Earth's electromagnetism do?

Shields us from harmful radiation

Increases the gravitational pull

Protects us from meteors

Magnetic field lines are visible to the human eye.

True

False

What do the white closed magnetic field lines do?

Extend far into space

Loop around and close at the solar surface

Connect to different planets

What can happen when magnetic field lines interact with each other?

Coronal mass ejections (CMEs) and solar flares

New stars

Nothing

5.02 Sun Basics

5.02 Sun Basics

We've talked about the Sun in other units. What are some things you all ready know about the Sun?

Before we jump into Unit 5, please rate yourself on the Unit 5 objectives from 1 (just starting) to 5 (mastered it!) You may need to scroll horizontally to see all options

We've talked about the Sun in other units. What are some things you all ready know about the Sun?

The Sun is an average low mass star. Think back to Unit 2 and the life cycles of low mass stars.Put the likely stages of the Sun's life cycle in order.

The images above show colorized X-ray images of the Sun over the course of March, June, September, and December 1999.True or false: The surface of the Sun does not change throughout the year.

On the left is a colorized X-ray image of the Sun. On the right is a visible light image of the Sun. Notice the dark spots on the visible light image.Which conclusion could you make?

Use the interactive diagram above to explore the part of the Sun.Then match the layers of the Sun's interior to its description

Match the layers of the Sun's exterior to its description

The Sun's photosphere is covered with "granules" where the brighter regions indicate hot, rising gas and the darker regions indicate cooler, down-welling gas.What type of energy transfer creates these "granules"?

How is the Sun's energy transferred to Earth?

What does a flowing electric current create?

What generates Earth's magnetic field deep inside the Earth?

What does the protective layer created by Earth's electromagnetism do?

Magnetic field lines are visible to the human eye.

What do the white closed magnetic field lines do?

What can happen when magnetic field lines interact with each other?

Before we jump into Unit 5, please rate yourself on the Unit 5 objectives from 1 (just starting) to 5 (mastered it!)

You may need to scroll horizontally to see all options

The Sun is an average low mass star.

Think back to Unit 2 and the life cycles of low mass stars.

Put the likely stages of the Sun's life cycle in order.

The images above show colorized X-ray images of the Sun over the course of March, June, September, and December 1999.

True or false: The surface of the Sun does not change throughout the year.

On the left is a colorized X-ray image of the Sun.

On the right is a visible light image of the Sun. Notice the dark spots on the visible light image.

Which conclusion could you make?

Use the interactive diagram above to explore the part of the Sun.

Then match the layers of the Sun's interior to its description

The Sun's photosphere is covered with "granules" where the brighter regions indicate hot, rising gas and the darker regions indicate cooler, down-welling gas.

What type of energy transfer creates these "granules"?