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Tuesday, December 6, 2016

Simple Machines Online Exploration

1. a. Predict: Based on the title, Six Simple Machines, what are some images you are going to see on the video?
b. Watch the Six Simple Machines video.  Think about and give an example of each type of simple machine.  





2. Copy down the definitions and examples, then sketch a picture of each simple machine term. Use www.google.com as a research tool to assist you in finding an example of each simple machine; use the fill in the blanks to help you in organizing your information. 



a. Gears:
 
Two toothed wheels fit together either directly or through a chain or belt so one wheel will turn the other.
Examples: Clock, Automobile, Drill, __________.



b. Inclined plane:
      
A sloping surface, such as a ramp.
Examples: Staircase,  Bottom of a Bath Tub, __________.



c. Lever:
    
A straight rod or board that pivots on a point known as a fulcrum.
Examples: Seesaw, Bottle Opener, __________.






d. Pulley:
  
A wheel that usually has a groove around the outside edge. This groove is for a rope or belt to move around the pulley. Work is made easier because pulling down on the rope is made easier due to gravity.
Examples: Flag Pole, Crane, __________.


e. Screw:
 
An inclined plane wrapped around a shaft or cylinder.
Examples: Bolt, Spiral Staircase, __________.

f. Simple Machine:   
A machine with few or no moving parts. Simple machines make work easier.




g. Wedge:

Two inclined planes joined back to back. Wedges are used to split things.
Examples: Axe, Zipper, _________.


h. Wheel and Axle:
 
A wheel and axle has a larger wheel (or wheels) connected by a smaller cylinder (axle) and is fastened to the wheel so that they turn together.
Examples: Door Knob, Wagon, _________.


i. Compound Machine:
Two or more simple machines working together to make work easier.
Examples: Wheelbarrow, Can Opener, Bicycle, _________.

Taken from http://edheads.org/activities/simple-machines/glossary.shtml




3. Go to http://edheads.org/activities/simple-machines/index.shtml 
a. Play the Simple Machines game!  Finish all the rooms in the The House.  Enter your data into the table.




4. Simple Machine Puzzles and Pictures

a. http://www.learninggamesforkids.com/simple-machines-games/simple-machines-hangmouse.html
Will you eat the cheese or will the cat eat you?  Pick the correct letters to spell the words about force, motion, and simple machines.
Sketch a picture of each vocabulary term in your notebook.

b. http://www.learninggamesforkids.com/simple-machines-games/label-it.html
Are you ready to find and label some simple machines?
1. What is the purpose of the wheel and axle?
2. Draw a picture of the screw and the work it does.
3. The ______ changes the direction of the force being applied.
4. The ramp or ________ _____ increases the ________ of the force while reducing the amount of force required.
5. Draw a picture of a wedge splitting an object.
6. The _____ is a bar that reduces the amount of force needed to lift objects.

Enjoy playing the Simple Machines matching game.  Match the choices by connecting the words to the best definitions.

d.  https://www.brainpop.com/games/simplemachines/
Use simple machines to help Twitch the Robot succeed!
For each game, answer this question: How does the simple machine help Twitch reach his goal?  Draw a diagram and label each.

5. Additional Simple Machine Videos
- Write a fact and an opinion about each video.

1. video
2. video
3. video
4. video

5. video
6. video
7. video
8. video

6. Assess Yourself!  How well do you know simple machines?  Take these FUN online assessments to find out.  :)

a. http://glencoe.mheducation.com/sites/0078771285/student_view0/unit1/chapter3/chapter_review_quiz_-_english.html 
b. http://www.softschools.com/quizzes/science/simple_machines/quiz392.html
c. http://www.quia.com/quiz/1031530.html

Monday, December 5, 2016

Simple Machine websites


A. Play the EdHeads Simple Machines game and choose two more games to play as well, then write a paragraph about what you learned.
http://www.edheads.org/activities/simple-machines/ - edheads
http://www.virginiatrekkers.com/MeadowFarm/Machines.html - drag/drop farm machines
http://www.tvokids.com/games/parkpuzzler - jigsaw, interactive
http://www.quia.com/cm/17214.html?AP_rand=709003347 – matching game
http://www.harcourtschool.com/activity/machines/simple_machines.htm - find SM in everyday objects
http://www.msichicago.org/fileadmin/Activities/Games/simple_machines/index.php - fun robot game

B. Take one of the tests and write the answers in your notebook.  Make sure and label!
http://www.quia.com/pop/36830.html - simple machines “test game”
http://www.quia.com/quiz/1935442.html - multiple choice
http://atlantis.coe.uh.edu/archive/science/science_lessons/scienceles1/finalhome.htm - review and quiz

C. 1. www.brainpop.com
2. Log In - username: ps220  password: brainpop
3. Search: "simple machines"
4. Play the videos, take the quizes.  Write observations in your notebooks.

D. Additional notes and videos

Wednesday, November 30, 2016

Work/Friction Science Article

1.

Friction Can Save Your Sandwich, And Other Tips For Better Bites


http://www.npr.org/sections/thesalt/2014/10/13/355115593/friction-can-save-your-sandwich-and-other-tips-for-better-bites

2.

Leonardo Da Vinci's "Irrelevant" Scribbles Are The First Recorded Laws Of Friction

https://www.dogonews.com/2016/10/12/leonardo-da-vincis-irrelevant-scribbles-are-the-first-recorded-laws-of-friction

3.

121 Student Teams Compete In Shell's Ultra Efficient Energy Vehicle Challenge

https://www.dogonews.com/2014/5/10/121-student-teams-compete-in-shells-ultra-efficient-energy-vehicle-challenge

4.

Tiny Origami Robot Runs, Climbs, Lifts Loads, And Even "Self-Destructs" Once Job Is Done

https://www.dogonews.com/2015/7/28/tiny-origami-robot-runs-climbs-lifts-loads-and-even-self-destructs-once-job-is-done


5. 

Hi-Tech Fabric Charges Devices On The Run - Literally!

https://www.dogonews.com/2015/4/14/hi-tech-fabric-charges-devices-on-the-run-literally


6. How were the pyramids built? Maybe with water

http://tweentribune.com/article/tween56/how-were-pyramids-built-maybe-water/

7. 

Why the knuckleball takes such a knucklehead path


8. 

Goo-oozing deicer protects surfaces

https://www.sciencenewsforstudents.org/article/goo-oozing-deicer-protects-surfaces


9. 

Teen gymnast finds how best to keep her grip

https://www.sciencenewsforstudents.org/blog/eureka-lab/teen-gymnast-finds-how-best-keep-her-grip


10. 

Teen prints a device to help keep wounds dry

https://www.sciencenewsforstudents.org/blog/eureka-lab/teen-prints-device-help-keep-wounds-dry


11. New coating for metals could cut engine wear

https://www.sciencenewsforstudents.org/article/new-coating-metals-could-cut-engine-wear


12. 

A Roller Coaster of a Track That Demands Precision

Monday, November 21, 2016

C3 Work, Force, Distance Videos

Video A. 
1. What do you do to make things move?
2. There are three things that can be done with a force, list them.
3. Describe friction in your own words using a picture with arrows and words.
4. True/False: It takes energy to do work.


Video B
1. A force can move a __________ object or stop a ______ object.
2. Describe how using a force can change the shape of an object.  Draw a picture.
3. Work can be calculated using the formula: ____ = _____x________. 
4. True/False: Food gives us the chemical energy we need to do work



Video C
1. Friction is a _____ that is created when ___ ________ move or try to move ______each other.
2. Compare/Contrast: What is the difference between the two surfaces, "more friction" and "less friction"?
3. Explain how friction helps us when riding a bike.
4. True/False: A wet floor is slippery because the liquid makes the barrier between the ground and your shoes increase friction.  
5. Project: Conduct the investigation at the end of the video.  What difference do you notice?  Why does this happen?

Video D
1. What would a world without friction look like?  (5-7 sentence summary and draw your own funny picture of a world without friction!)

Monday, November 14, 2016

Lab #3 – Calculating Work

Lab #3 – Calculating Work

Work = Force x distance
Work = (Force)(Distance)
W = Fd

Problem
How can a ramp help us pull a heavy object up to a greater height?

Hypothesis

Materials
Ruler, chair, ramp (inclined plane), weights, spring scale, various metallic objects

Procedure

Results
A.  Work done without ramp
Object
Force (Newtons)
Distance (cm)
Work (Joules)
20 g Weight
__N
__cm
___J
50 g Weight



100 g Weight



200 g Weight



500 g Weight



 1 Kg Weight




B.  Work done with ramp
Object
Force (Newtons)
Distance (cm)
Work (Joules)
20 g Weight
 N
cm 
50 g Weight



100 g Weight



200 g Weight



500 g Weight



1000 g Weight




 Make another Hypothesis: Use your hands to feel the trash bags, plastic maps, sandpaper, cloth, etc.  Which of these will cause more work to be done on the weights? 

C.  Work done with ­­­­________ and ramp
Object
Force (Newtons)
Distance (cm)
Work (Joules)

20 g Weight



50 g Weight



100 g Weight



200 g Weight



500 g Weight



1 kg Weight



  
D.  Work done with ­­­_________ and ramp
Object
Force (Newtons)
Distance (cm)
Work (Joules)
20 g Weight



50 g Weight



100 g Weight



200 g Weight



500 g Weight



1000 g Weight




ANALYSIS
1)   Make two graphs to compare your Results: Graph 1 will compare the data in A and B, Graph 2 will compare the data in B, C, and D.
2)   How did the weight (force pulling down) affect the amount of work done on the object?
3)   Compare/Contrast the trial with the least amount of work to that with the most amount of work.
4)   Part 1 (A,B): What is your Independent Variable?
5)   Part 1 (A,B): What is your Dependent Variable?
6)   Part 1 (A,B): What are your Constants?
7)   Part 2 (B,C,D): What is your Independent Variable?
8)   Part 2 (B,C,D): What is your Dependent Variable?
9)   Part 2 (B,C,D): What are you Constants?
10)                Make an inference: Which will increase the friction of the object you are pulling, the plastic map/plastic bag or the sand paper? 
11)                How did the sand paper affect the amount of work done on the object?
12)                Compare/Contrast the work done between using the ramp and not using the ramp.

Conclusion
 What was your problem?
 Restate your hypothesis.  Was it right? wrong?  why or why not?
Briefly describe your procedure.
 What did you learn in this lab?
 What did you like about this lab?
 What were some challenges you had to deal with?
 What could you do next with this problem?  What other tests could you perform?
 Write down any other additional thoughts, observations, inferences, etc.