02 Models & Feedback Loops

Last updated about 2 hours ago

15 questions

0.3

Required

0.3

HS-ESS2-2

Required

0.8

HS-ESS2-2

Required

0

Library

02 Models & Feedback Loops

Last updated about 2 hours ago

15 questions

Learning Target #1: Describe the use of models in science and how they can change

0.3

Scientific thinking changes based on new information and technology.

Before watching the video below to learn more about how scientists determined the age of the Earth, make a prediction: How old is the Earth?

Question 2

01:52

Question 3

02:50

Question 4

03:50

0.3

Scientists use models to help visualize something that may be difficult to understand.

What tools can be used to create models?

Question 6

00:51

Question 7

01:53

Learning Target #2: Define negative and positive feedback loops and explain how they are different

Feedback loops help us understand cause and effect relationships. A feedback loop occurs when an action or event leads to a certain result, which then influences the original action or event. 

In a positive feedback loop, the effect of an action amplifies the original action, creating a self-reinforcing cycle.

In a negative feedback loop the effect of an action seeks to stabilize and balance a system or condition. 

Question 8

00:47

Question 9

01:12

Question 10

02:31

Question 11

02:47

Required

0.9

This image is a model of a negative feedback loop here on Earth (and Daisyworld).

Why is this considered a negative feedback loop?

HS-ESS2-2

Required

0.3

Consider this model of a positive feedback loop briefly mentioned at the end of the Daisyworld video.

Determine the effects of polar ice caps melting.

Why is the previous model of melting ice considered a positive feedback loop?

HS-ESS2-2

Required

0

Learning Target #1: Describe the use of models in science and how they can change

Scientific thinking changes based on new information and technology.

Before watching the video below to learn more about how scientists determined the age of the Earth, make a prediction: How old is the Earth?

Question 2

01:52

Question 3

02:50

Question 4

03:50

Scientists use models to help visualize something that may be difficult to understand.

What tools can be used to create models?

Question 6

00:51

Question 7

01:53

Learning Target #2: Define negative and positive feedback loops and explain how they are different

Feedback loops help us understand cause and effect relationships. A feedback loop occurs when an action or event leads to a certain result, which then influences the original action or event. 

In a positive feedback loop, the effect of an action amplifies the original action, creating a self-reinforcing cycle.

In a negative feedback loop the effect of an action seeks to stabilize and balance a system or condition. 

Question 8

00:47

Question 9

01:12

Question 10

02:31

Question 11

02:47

Required

0.9

This image is a model of a negative feedback loop here on Earth (and Daisyworld).

Why is this considered a negative feedback loop?

HS-ESS2-2

Consider this model of a positive feedback loop briefly mentioned at the end of the Daisyworld video.

Determine the effects of polar ice caps melting.

Why is the previous model of melting ice considered a positive feedback loop?

Self Assessment: Rate your mastery of each learning target.

	1 - I need help!	2	3	4	5 - I could teach this to another student
Learning Target #1: Describe the use of models in science and how they can change
Learning Target #2: Define negative and positive feedback loops and explain how they are different

When half of the parent atoms have become daughter atoms, that's called the half life of that element.

True

False

Scientists frequently use __________ (found in zircon crystals) in radiometric dating, which decays into __________

Scientists used radiometric dating on _______ to arrive at the 4.565 billion year age of the Earth.

Models can change based on new information.

The Ancient Greeks developed the __________ model, which placed the __________ at the center of the solar system.

Copernicus developed the __________ model, which placed the __________ at the center of the solar system.

When the planet is cool, __________ daisies grow, absorb the Sun's energy, and cause temperatures to __________.

When the planet is warm, __________ daisies grow, reflect the Sun's energy, and cause temperatures to __________

The albedo of a mirror would be _______ % and the albedo of a black surface would be _______ %.

Which type of feedback loop does Daisyworld represent?

negative

positive

What functions similar to the white daisies and reflects sunlight here on Earth? _______ 

Self Assessment: Rate your mastery of each learning target.

1 - I need help!

2

3

4

5 - I could teach this to another student

Learning Target #1: Describe the use of models in science and how they can change

Learning Target #2: Define negative and positive feedback loops and explain how they are different

When half of the parent atoms have become daughter atoms, that's called the half life of that element.

True

False

Which type of feedback loop does Daisyworld represent?

negative

positive

02 Models & Feedback Loops

02 Models & Feedback Loops

Scientific thinking changes based on new information and technology.Before watching the video below to learn more about how scientists determined the age of the Earth, make a prediction: How old is the Earth?

Scientists use models to help visualize something that may be difficult to understand.What tools can be used to create models?

This image is a model of a negative feedback loop here on Earth (and Daisyworld).Why is this considered a negative feedback loop?

Why is the previous model of melting ice considered a positive feedback loop?

Scientific thinking changes based on new information and technology.Before watching the video below to learn more about how scientists determined the age of the Earth, make a prediction: How old is the Earth?

Scientists use models to help visualize something that may be difficult to understand.What tools can be used to create models?

This image is a model of a negative feedback loop here on Earth (and Daisyworld).Why is this considered a negative feedback loop?

Why is the previous model of melting ice considered a positive feedback loop?

Self Assessment: Rate your mastery of each learning target.

When half of the parent atoms have become daughter atoms, that's called the half life of that element.

Which type of feedback loop does Daisyworld represent?

Scientific thinking changes based on new information and technology.

Before watching the video below to learn more about how scientists determined the age of the Earth, make a prediction: How old is the Earth?

Scientists use models to help visualize something that may be difficult to understand.

What tools can be used to create models?

This image is a model of a negative feedback loop here on Earth (and Daisyworld).

Why is this considered a negative feedback loop?

Scientific thinking changes based on new information and technology.

Before watching the video below to learn more about how scientists determined the age of the Earth, make a prediction: How old is the Earth?

Scientists use models to help visualize something that may be difficult to understand.

What tools can be used to create models?

This image is a model of a negative feedback loop here on Earth (and Daisyworld).

Why is this considered a negative feedback loop?