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Chemistry, 12.08.2021 02:30 iiamlui

Each core content area will have (part 1) and (part 2) Select the _completion button_ button or green check mark before moving onto the assessment .
Accessing and navigating the course
Each day’s lessons are found on your __home page__.
You can see the outline by clicking on .
need to be completed before the lesson can be marked complete.
Working on your course
Quick checks - graded (yes/no) - a few questions from the lesson
Discussion - graded (yes/no) - a prompt that will relate to the lesson
Portfolio - graded (yes/no) - work that is created by the student that will cover information from multiple lessons and submitted through the drop box.
Unit Test - graded (yes/no) - multiple choice, true false, fill in the blank, and short answer questions covering the information from one unit.
Sample work - OPTIONAL - this will be used as an extra credit assignment
Receiving Grades and Feedback
Feedback and grades are found in the.
You will also receive a when something has been graded.
Lesson 2 - Part 1
Objective: In this section, you will understand how to conduct scientific investigations and develop scientific explanations in different fields of science.

Vocabulary
Empirical Evidence -
Hypothesis -
Model -
Scientific method -
Testable question -
Scientific Method
There are steps to the scientific method.
Ask a testable
Write a .
Write a careful procedure using repeated trials and replication.
Do the ; collect
your data.
Draw a .
Step 1 - Ask a testable question
The question must be something and include a and variable.
Independent variable is what .
Dependent variable is what .
Step 2 - Write a hypothesis
A hypothesis is and needs to have a way to .
Needs to be in an “if-then” statement.
IF (change in the variable), then (change in the variable).
Example: If I put my flowers in direct sunlight, then they will grow 1 inch a day.
Check in
What is a hypothesis?
How do scientists form a hypothesis?
Briefly describe the scientific method in your own words.

Practice
Write a hypothesis for each of the following questions:
What is the link between the number of cigarettes smoked per day and the chance of getting lung cancer?
Hypothesis:

What is the relationship between a person's age and their values in life?
Hypothesis:

How does the distance of a tree to a body of water impact its height?
Hypothesis:

Give an example of a scientific model and how it might be used.

“Is smoking cigarettes bad?” is not a very good scientific question, as discussed in the lesson. Explain why.

Lesson 2 - Part 2
Objective: You will design and conduct a scientific study.
Vocabulary
Conclusion -
Data analysis -
Data collection -
procedure/method -

Scientific investigation and repeated trials
Repeating measurements or trials allows you to make sure that your results are .
Check in
Why are repeated trials important?
Does a scientific hypothesis need to be correct?
What happens if the results of your experiment do not support your hypothesis?
Practice
What is your hypothesis and question?
Briefly describe your methods, collect data, and record it.
Analyze your data. Does it support your hypothesis? Why or why not?

Lesson 2 - Part 3
Objective: In this section, you will understand why we use phrases like “supports” or “fails to support” when talking about hypotheses and why science doesn’t offer conclusive proof.

Vocabulary
Conclusive proof
Scientific theory

The difference between supporting and proving a hypothesis
Scientists will always say that their results either or ___ the hypothesis.
A is an explanation about the natural world that is supported by a lot of evidence.
The difference between a hypothesis and theory
A hypothesis is an or . A theory has a lot of supporting it.
Scientific theories are accepted as fact because there is so much supporting them.
Examples: theory of gravity and evolution.
Check-in
Why is science unable to provide conclusive proof?
Why do scientists say that the results of an investigation “support” or “fail to support” a hypothesis instead of using the words prove or disprove?
What is the difference between a scientific hypothesis and a scientific theory?

Practice
Researchers in a rainforest discover a new species of beetle. So far, they have found 200 members of this species, and each one had a single red spot on its back. Does this prove that all beetles of this species have a red spot on their back? Explain.

Consider the previous question. The scientist who discovered the first beetle of this species proposed a hypothesis that all members of the species have a red spot on their back. What statement could you make about this hypothesis based on the evidence collected so far?

ansver
Answers: 3

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