## Assignment #15: Unit 8.7, Lesson 3: Anchoring Experience Due Date Friday, May 29, 2020 at 2:55 pm

Students: Note that Assignment #15 is up on Google Classroom awaiting your skills. NOTE THAT ANOTHER ATTACHMENT HAS BEEN ADDED FOR THE VENN DIAGRAM THAT YOU CAN COPY AND COMPLETE AND SUBMIT.

You are to complete the Venn Diagram on the second page of the attachment that the classroom teacher has already started it for you. Double click on it, and it should open up and as you research your material, you will be able to fill in the appropriate information for comparing and contrasting three of the inner planets, namely, Venus, Earth, and Mars.

Once you are done, you will reinforce the topic, as you have normally done in class, and you will synthesize an answer to the lesson question.

On a lighter note, here is the answer key for the short answers on the background information of the lesson:

1. Define the greenhouse effect.

The greenhouse effect is a part of the greenhouse system, the characteristic absorption of thermal energy by greenhouse gases in the atmosphere (the mixture of gases that surround the planet) and re-radiation back towards Earth’s surface.

1. What role and outcome do the concentration of the greenhouse gases in the atmosphere play?

Greenhouse gases, such as carbon dioxide, are those that absorb incoming thermal energy and reradiate energy in all directions as thermal energy. When Earth’s atmosphere has higher concentrations of greenhouse gases, the mean surface temperature of the Earth will be higher.

1. Reflecting back on system models, what role do these models play here?

System models can be used to represent the greenhouse effect systems and its interactions—such as inputs, processes and outputs—and energy and matter flows within the system.

1. Earth is considered to be a closed system. What is so special about that?

Through using a model, one can input various greenhouse gas concentrations and observe from the surface temperature output that increasing or decreasing greenhouse gases directly increases or decreases Earth’s surface temperature.

1. What is meant by the mean surface temperature and what contributes to it?

Mean (average) surface temperature is a measure of the amount of thermal energy present and is dependent in part on the concentration of greenhouse gases in the atmosphere.

OR

Earth’s mean surface temperature is the average over the whole planet, from the equator to the poles, all year round – currently this temperature is roughly 15oC or 60oF. This temperature depends partially on the interaction of sunlight (visible electromagnetic energy) and gases in the atmosphere.

1. How are gas molecules related to the energy of the sun?

Gas molecules in the atmosphere allow incoming solar radiation to pass through them without absorbing energy.

1. What is the indication of the internal energy of an object that results in its temperature?

Thermal energy, which can be represented by infrared photons, is the internal energy of an object due to its temperature.

1. Why is the majority of the energy able to pass through the atmospheric gases?

The primary components of Earth’s atmosphere, nitrogen (78%) and oxygen (20%), are gas molecules with rigid structures that do not vibrate when hit with thermal energy; therefore, most of the energy passes through them.

1. How are greenhouse gases different from atmospheric gases?

Greenhouse gases such as carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O) possess a vitally different molecular property: Their atoms vibrate when they absorb thermal energy. The vibrating gas molecules then re-radiate thermal energy in all directions, including back down to Earth.

1. How is the greenhouse effect created? Explain your response.

The process of energy absorption and re-radiation back towards Earth’s surface creates the greenhouse effect, based on the idea of how the glass walls of a greenhouse maintain a higher concentration of thermal energy within the greenhouse.

## Reminder: Assignment #14 Due Thursday, May 21, 2020

Since Assignment #14 is due this Thursday, tomorrow, many of you have been rushing to submit overnight or before dawn. As a result, many of you have been doing a poor job, due to rushing to complete the work, without reading sufficiently and understanding what each question is asking you. Again, avoid copying and pasting off the internet without understanding what you have read. Practice paraphrasing ideas in your own words, based on your comprehension skills. Avoid plagiarizing someone else’s work, and pretend that it is your own, since your classroom teacher has already learned much of your educated skills thus far in your learning process!

To make life easier for you, if you just read all the class notes in the lesson attachment and understand them, you will discover that all of the answers to the questions are there for you to match them up in your own words. Think of the class notes as your own words for now.

## Assignment #14

Students make sure that you read all the class notes in the assignment itself, since ALL of the responses to your comprehension questions that you need to complete can be found there.

## Assignment #14: Due Thursday, May 21, 2020

Assignment #14 scheduled for next week is up on Google Classroom and is due by midnight Thursday, May 21, 2020. Note that Assignment #14 is based on reading comprehension of Unit 8.7, Lesson 3.

## A Simple Reminder

Assignment #13 is due this Friday.

Remember to pace yourself as you do your online homework.

Avoid rushing to complete your work before Friday midnight, since Friday evenings, you need to relax and begin to enjoy your weekend.

Students: Assignment #13 is up on Google Classroom. The due date of the assignment is Friday, May 15, 2020.

Over 30 students had chosen to wait until Friday evening to complete Assignment #12, and many of them did not fair as well, due to many grammatical mistakes and poor expressions in their writing style, because they rushed through the assignment.

You need to allow sufficient time to focus on the science concepts and ideas in order to perform better.

Many of the 30 students are far more capable of doing a good job, but have chosen either to copy and paste off others or simply fake it.

It is your future, and that’s where you will be spending most of your life.

## Assignment #12: Due Tomorrow, Friday, May 08, 2020

Avoid falling behind in school work, due to failing to prepare, because if you have failed to prepare, you have actually prepared, and what you have prepared for is failure!

## Reminder: Assignment #12: Unit 8.7, Lesson 2: Asking Questions About Climate Change: Background Information, Anchoring Experience, and Uncover & Elaborate on Your Ideas

Note that Assignment #12 is due this coming Friday. Avoid delaying your work in order not to receive the call home for failure to do your work, that many, many of you have been receiving from your various teachers, because many of you have been waiting until is is too late, and you end up doing a poor job, just to merely submit the work that is being done poorly.

The classroom teacher has informed you to plan accordingly. For those of you who are incapable of knowing on how to plan, Use one of the two following approaches:

Approach One

Mondays: ELA

Tuesdays: Math

Wednesdays: Science

Thursdays: Social Studies

Fridays: Both Electives

Weekend: Rest Up

Rinse and Repeat the Following Week!

Approach Two

ELA, Math, Science, Social Studies, and 2 electives = 20 minutes for each of them daily, five days a week.

Weekend: Rest Up

Rinse and Repeat the Following Week!

## Unit 8.7: The Mayor’s Letter Simulation (For those of you who did not make copies of your previous work, as you were asked to do so)

Unit Challenge Scenario: Claim #1 below is in this week’s assignment for your analysis.

I need your help for our great community. I’ve heard many people having discussions regarding the following claims:

1. Global temperatures are rising, and they are rising faster than in the past.
2. A change in climate will have an impact on our community.
3. The actions we take impact our environment.

I need you to investigate these claims so that we can better prepare for our future. We need to know if there will be negative impacts on people and the environment. If there will be impacts, we need to know whether we can do something to reduce those impacts.

I am challenging you to educate people about how Earth’s climate system works, what causes global climate to change, if people and the natural environment will be impacted, and what we can do about it. I look forward to hearing your recommendations about what we should do.

This challenge is being given to all 8th graders in the city.  I will use the winning recommendations in my annual “state of the city” speech to our community.

Good luck and thank you for your work to help our community become even greater!

Sincerely,

The Mayor”