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Biology 21 Online
OpenStudy (anonymous):

Lizzie loves to stargaze at night. She has noticed that the moon appears to change shape over the course of the month, and she wants to investigate why this happens. She hypothesizes that the relationship of the sun, Earth, and moon creates shadows on the moon. She sets up an experiment with a lightbulb to represent the sun, a large beach ball to represent Earth, and a smaller foam ball to represent the moon. She researches the position of the sun, Earth, and moon at different times of a month and makes a model of the entire system. Identify the parts of the scientific method in Lizzie's experiment. List at least three variables Lizzie should control during the experiment. For each variable identified, give a specific suggestion for how Lizzie can control it.

OpenStudy (anonymous):

What is the question?

OpenStudy (anonymous):

oops one sec

OpenStudy (anonymous):

ok here Lizzie loves to stargaze at night. She has noticed that the moon appears to change shape over the course of the month, and she wants to investigate why this happens. She hypothesizes that the relationship of the sun, Earth, and moon creates shadows on the moon. She sets up an experiment with a lightbulb to represent the sun, a large beach ball to represent Earth, and a smaller foam ball to represent the moon. She researches the position of the sun, Earth, and moon at different times of a month and makes a model of the entire system. Identify the parts of the scientific method in Lizzie's experiment. List at least three variables Lizzie should control during the experiment. For each variable identified, give a specific suggestion for how Lizzie can control it.

OpenStudy (anonymous):

@ajackman101

OpenStudy (anonymous):

Liz asked a question: Why does the moon appear to change shape over time? Liz made a hypothesis: The relationship of the sun, Earth, and moon creates shadows on the moon. Liz did background research: researched the positions of the sun, earth and the moon. Liz tested the hypothesis by making an experiment.

OpenStudy (anonymous):

Ok so here are some suggestions that may help you..Hope it helps :) 1) external light sources (could distort shadows or impede them) 2) reflective surfaces near the light source or balls (or upon the balls themselves) 3) distance relationships between the balls and light source (varying your distances too dramatically or not dramatically enough could alter the shadows) 4) The angles of the objects involved in spatial relation to their planes of orbit (as the beach ball orbits the bulb, the the foam ball circles the beach ball. Keep the planes of orbit consistent) @ajackman101 correct me if I'm wrong

OpenStudy (anonymous):

I am not sure about the variables though...

OpenStudy (anonymous):

@TinkerbellGirl I saw that answer before sorry but do you guys need the instructions??

OpenStudy (anonymous):

@ajackman101

OpenStudy (anonymous):

Ya maybe it would help

OpenStudy (anonymous):

TinkerbellGirl was on the right track

OpenStudy (anonymous):

Ok one sec again. Review each scenario below, and choose one to complete for your assignment. Each scenario contains specific questions that will ask you to provide examples, explain your suggestions for improvement, and refer to the lesson. Be sure to respond to each question in complete sentences.

OpenStudy (anonymous):

I don't know

OpenStudy (anonymous):

please try

OpenStudy (anonymous):

Ya I'm not really sure, but I'll try again

OpenStudy (anonymous):

thanks

OpenStudy (anonymous):

What have you come up with for an answer so far?

OpenStudy (anonymous):

well I don't really know the scientific method

OpenStudy (anonymous):

that well

OpenStudy (anonymous):

Ok I'll explain it to you just a moment..

OpenStudy (anonymous):

ok Thanks for helping

OpenStudy (anonymous):

@ajackman101 Please help

OpenStudy (anonymous):

Ok so the scientific method is a body of techniques investigating phenomena, gathering new knowledge, or correcting already known knowledge... The scientific method goes like this: Step 1. Make an observation Step 2. Ask a question Step 3. Make a hypothesis Step 4. Conduct an experiment Step 5. Draw conclusions Step 6. Report your results Does that help you any to understand it better?

OpenStudy (anonymous):

@Aly.mac101 i've tried to understand it better, but i don't think the second part of the question is worded well.

OpenStudy (anonymous):

oh

OpenStudy (anonymous):

Ok so the observation is when she stargazes?

OpenStudy (anonymous):

Or there is this one Step 1. Research Step 2. Find a problem Step 3. Make a hypothesis Step 4. Experiment Step 5. Compile data Step 6. Form conclusion Step 7. Maybe find answer Step 8. Maybe find another problem

OpenStudy (anonymous):

The scientific method in this case is observing something unexplained (the moon phases) then creating a hypothesis of why it happens this way, then setting up an experiment to then test the hypothesis. The controlled variables are the amount of light from the sun and it's position and the earth's position and rotation(night time). The independent variable is the moons position around the earth within its orbit, and the dependent variable is the phase of the moon (full, half,crescent etc). Does that help you at all??

OpenStudy (anonymous):

kinda not really

OpenStudy (anonymous):

its still confusing I don't know how to answer the questions and I really need to get this done

OpenStudy (anonymous):

Ok her observation is that shes noticed that the moon appears to change shape over the course of the month

OpenStudy (anonymous):

oh that makes sense and her experiment is with the foam ball??

OpenStudy (anonymous):

Yes correct!

OpenStudy (anonymous):

She also uses a lightbulb and a beach ball

OpenStudy (anonymous):

what about the finding problem aka step 2

OpenStudy (anonymous):

Ok first tell me what you think is the problem, I'll correct you if you're wrong

OpenStudy (anonymous):

ok one sec

OpenStudy (anonymous):

She hypothesizes that the relationship of the sun, Earth, and moon creates shadows on the moon??? is her hypothesizes wrong?

OpenStudy (anonymous):

No you really can't have a wrong hypothesis cuz its just one's opinion on what they have seen or experienced..does that make sense?

OpenStudy (anonymous):

yes then whats step 2?

OpenStudy (anonymous):

??

OpenStudy (anonymous):

Just a moment

OpenStudy (anonymous):

kk

OpenStudy (anonymous):

I'm so confused

OpenStudy (anonymous):

@TinkerbellGirl please help

OpenStudy (anonymous):

Ok so ask a question - Her question was why does the moon appear to change shape over the course of the month - your hypothesis can sometimes be the same as your question

OpenStudy (anonymous):

I don't get it /is step 2 her hypothesis??

OpenStudy (anonymous):

or my opinion

OpenStudy (anonymous):

???

OpenStudy (anonymous):

@TinkerbellGirl

OpenStudy (anonymous):

Follow this: Step 1. Make an observation Step 2. Ask a question Step 3. Make a hypothesis Step 4. Conduct an experiment Step 5. Draw conclusions Step 6. Report your results 1. She has noticed that the moon appears to change shape over the course of the month 2. Why does this ( the moon appears to change shape over the course of the month ) happen 3. She hypothesizes that the relationship of the sun, Earth, and moon creates shadows on the moon 4. She does the experiment with the balls and stuff 5. I'm not really sure what she concludes, maybe you could figure it out 6. Report what experiment results were

OpenStudy (anonymous):

Does that help?

OpenStudy (anonymous):

thanks thats the answer right?

OpenStudy (anonymous):

Its the scientific method for the story. is that all you needed or is there more to it?

OpenStudy (anonymous):

List at least three variables Lizzie should control during the experiment. For each variable identified, give a specific suggestion for how Lizzie can control it. Is that in there?

OpenStudy (anonymous):

@TinkerbellGirl ??

OpenStudy (anonymous):

Ok just a sec :)

OpenStudy (anonymous):

please hurry!!

OpenStudy (anonymous):

1. the postion of the moon to show parts of the moon is being covered by different parts of the earth, basically how the earth shadows the moon. She should also see if any other light source will effect the test. 2. the postion of the earth with the sun or what time of year it is to show if the moon is in front of the earth or not. If she is using a lightbulb as her test subject she should make sure the test distance is realatively the same as it would be in real life. 3. She could use the tilt of the moon, earth, an sun so that if only certain parts of the earth or moon were showing. She should also keep the orbit at constant distance at all times.

OpenStudy (anonymous):

thanks one sec

OpenStudy (anonymous):

Kk

OpenStudy (anonymous):

could you help me with some more?

OpenStudy (anonymous):

Ya I'll try

OpenStudy (anonymous):

ok i'm going to close and open a new one ok?

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