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3/31/09
Warm up: Describe 5 forces that act on a basketball when it is shot into a basket.
3/30/09
Warm up: What is the difference between kinetic and potential energy?
3/16/09Warm up: Why is it important to be knowledgeable about a topic before you begin an experiment?
Rewind: Name a topic related to science that you are knowledgeable about. List 5 quick facts about that topic.
3/13/09Warm up: Do you believe in superstition?
Rewind: have you ever changed your behavior because of a superstition?
3/12/09No warm up today: substitute
3/11/09
Warm up: what job would you like to have when you graduate?
Rewind: what kind of training is required to be successful at that job?
3/10/09Warm up: What is a question that you have always wanted to know the answer to?"He who asks a question is a fool for five minutes;
he who does not ask a question remains a fool forever." Chinese Proverbs
Rewind: What steps could be taken to find the answer to your warm up question?
3/9/09
Warm up: Who is responsible for your learning?
Rewind: Who is in control of
how much you learn?
Warm up 3/6/09When energy is transferred from
one form to another, why can’t all of it be used for doing work?
(what causes energy to be wasted?)
Warm up 3/6/09Rewind:If you were to build a machine that
transfers chemical energy to mechanical energy name two types of friction that you would try to minimize to reduce wasted energy.
Warm up 3/5/09What did you build for for your project?
How did it work? What were some difficulties?
Rewind: no rewind today
Warm up 3/4/09On Tuesday, you were assigned 4 science article
summaries.
Warm up: Write 3 facts from one of the articles/sections that you read.
Were you absent Tuesday?
Finish them by Wednesday!
Rewind 3/4/09
How did the egg drop devices protect the egg? (discuss forces that were involved in the collision)
Warm up 3/3/09
Describe how your life has been affected by a microorganism.
Rewind 3/3/09
How do you prevent bacterial infections?
Warm up 3/2/09
What do you know about bacteria?
Rewind 2/26/09
How do you prevent bacterial infections?
Warm up 2/27/09
Mr Shown was absent.No warm up today.
Rewind 2/26/09 No rewind today
Warm up 2/26/09
How can you conserve energy in your daily life?
Rewind 2/26/09
Why is it important for people to conserve energy?
rewind2/26/09
How can you conserve energy in your daily life?
Warm up 2/25/09
How is kinetic energy different from potential energy?
Rewind 2/25/09
What were some common sources of error found in experiments?
Warm up 2/24/09
What was the changed variable in your experiment?
Which variables stayed constant for all trials?What were some sources of error in your
experiment?
Rewind 2/24/09
Which force causes an object to roll downhill?
Which forces slow down an object that rolls downhill?
Warm up 2/23/09
Explain the forces that were acting on the objects in your experiment.
Warm up 2/19/09
What is gravitational potential energy? (see page 448)
Answer:The energy an object has stored because of gravity.
Rewind 2/19/09
What is elastic potential energy?
Answer:energy that can be released when an object stretches.
Warm up 2/18/09
What is potential energy? (see page 448)
Answer:The energy an object has stored inside.
Rewind 2/18/09
How would the potential energy change if you triple the height of an object?
Answer:The potential energy will triple.
Warm up 2/17/09
What is kinetic energy? (see page 447)
Answer: Kinetic energy is the energy of motion.
Rewind 2/17/09
How would the kinetic energy change if you triple the speed of an object?
Answer: kinetic energy would increase by 9 times
Warm up 2/10/09
Describe 1 example of an action-reaction pair of forces.
Warm up 2/9/09
How do ball bearings reduce friction in a machine?
Ball bearings have rolling friction which is less forceful that sliding friction.
Warm up 2/6/09
What is the one variable that your group is changing during your experiment?
What are variables that you will keep constant?
Warm up 2/5/09You will need a warm up sheet this week
When is the next assignment list (2.3) due?
Answer: February 10th!
Warm up 2/3/09You will need a warm up sheet this week
• When a car is driving down the road, which kind of friction is taking place between the road and the tires?
• Which kind of friction is taking place between the air and the car?
Warm up 2/2/09You will need a warm up sheet this week
• Explain why the “air puck” can slide around so easily.
• Give one example of something else that could make something roll or slide more easily.
Warm up 1/29/09 No warm up sheet needed this week Each group will need to write down their answer on paper and
then share. • Explain why the
“air puck” can slide around so easily.
• Give one example of something else that could make something roll or slide more easily.
Warm up 1/28/09 No warm up sheet needed this week
• Each group will give 4 examples of their assigned type of friction.
• 1,2)Static friction (p.359)• 3,4) Sliding friction (p.359)• 5,6)Rolling friction (p.360)• 7,8)Fluid friction (p.360)
