Transcript Roller Coaster and Gravity Powerpoint

Energy and Gravity
DO NOW MONDAY
 What does the Law of Conservation of Energy say?
 What are potential energy and kinetic energy?
Learning Targets
 Explain the Law of Conservation of Energy.
 Explain the direction and sequence of energy
transfer.
Potential and Kinetic Energy
 Potential energy: stored energy
 Kinetic energy: energy of motion
 Potential energy can be transformed into kinetic
energy and vice versa as things move and stop or
speed up and slow down.
Potential and Kinetic Energy
 https://www.youtube.com/watch?v=7K4V0NvUxRg&li
st=PLNP7mXrp0yBJtpHIMpRBEZ9rxTfZW0kae
Roller Coasters
 On a roller coaster, potential energy is transformed
into kinetic energy and back into potential energy as
the coaster moves along the track, up and down the
“hills”.
Roller Coasters
Roller Coasters
 The higher the coaster (or anything ) is off the
ground, the more potential energy it has.
 This is called gravitations potential energy.
 The more or faster something is moving, the more
kinetic energy it has.
Roller Coasters
Roller Coasters
 Identify which letter(s) in the picture indicates where a coaster
car would have:
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The greatest potential energy
The greatest kinetic energy
Transformation from potential to kinetic energy
Transformation from kinetic to potential energy
Roller Coasters
 https://www.youtube.com/results?search_query=kine
tic+and+potential+energy+and+roller+coasters
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Roller Coasters
Requirements:
100 points possible
Successful (must travel entire course without stalling)
2 hills (at least)
1 corkscrew or loop
Name of coaster (no copycats)
Initial design drawing (draw at bottom of this page)
Final drawing (on back of this page)
Drawing should be accurate and look like your coaster.
Be sure to indicate measurements of your coaster such as
heights of hills and distance between hills
 Indicate on your drawing the following
(You can indicate each point with a letter on your final drawing)
Point of greatest potential energy
Point of greatest kinetic energy
Point(s) where potential is changing to kinetic
Point(s) where kinetic is changing to potential
25 points
20 points
10 points
5 points
10 points
10 points
20 point
DO NOW TUESDAY
 Explain the energy transformation that is happening
in the picture below.
Learning Targets
 Explain the Law of Conservation of Energy.
 Explain the direction and sequence of energy
transfer.
DO NOW WEDNESDAY
 Give a definition of gravity in your own words.
Learning Targets
 2.1 Explain gravity’s effects on different objects.
 2.2 Describe the relationship between mass and
gravitational force.
 2.3 Describe the relationship between distance
between objects and gravitational force. (different
planets)
Gravity
 Use the textbook (pages 58-61) to answer the questions about
gravity below in your notebook on page . Be sure to write your
answers in complete sentences.
 1. What is the definition of gravity?
 2. What is true about the rate at which all objects on Earth free
fall due to gravity?
 3. Explain what air resistance does to the rate at which objects
fall.
 4. What two things does gravity depend upon?
 5. Explain how mass affects gravity.
 6. Explain how the distance between two objects affects gravity.
Gravity
 The force that pulls objects toward each other.
 A force that acts between any two objects in the
universe.
Acceleration Due to Gravity
 All objects free fall at the same rate due to gravity.
 This rate is 9.8 m/s2
Gravity Demonstration
 Drop 1: Watch the piece of paper and the ball drop.
 Drop 2: Watch the paper wad and the ball drop.
 What was different?
 Why do you think there was a difference between the
first drop and the second drop?
Air Resistance
 Is a force that acts against gravity
 Is a force that acts more on lightweight objects with
more surface area, making them fall slower than
expected.
 Can make objects fall at different rates
Gravity and Air Resistance
 Even though gravity makes things fall with same
acceleration (at the same rate), air resistance can cause
different objects to fall at different rates and hit the
ground at different times.
 Lightweight objects with more surface area have more
air resistance pushing against them and so fall slower
and hit the ground later than heavy objects with smaller
surface area.
Gravity Demonstration
 Can you explain the Gravity demonstration with the
paper and the ball better now?
Factors Affecting Gravity
Bill Nye’s Thoughts on Gravity
 https://www.youtube.com/watch?v=ncu2NfiaRDk
 After watching the video, answer the questions on
the sheet provided.
DO NOW FRIDAY
1. List the two things that can affect gravity.
2. Explain how each of these things affects gravity.
Learning Targets
 2.1 Explain gravity’s effects on different objects.
 2.2 Describe the relationship between mass and
gravitational force.
 2.3 Describe the relationship between distance
between objects and gravitational force. (different
planets)
DO NOW MONDAY
 Study for gravity quiz.
QUIZ EXPECTATIONS
1. QUIET
2. Do your best. (Eyes on own paper.)
3. Finished? (Turn your quiz over and write a note,
draw a picture for Mrs. Dyer on the back.)
Learning Targets
 2.1 Explain gravity’s effect on different objects.
 2.2 Describe the relationship between mass and gravitational force.
 2.3 Describe the relationship between gravitational force and the
distance between objects. (different planets)
 2.4 Identify unit used to measure gravitational force.
 3.1 Describe the relationship between motion and energy.
 3.2 Explain the difference between potential and kinetic energy.
 3.3 Describe how an object’s position affects potential energy.
(Relate gravity to potential energy)
 Product Target: Design a functional roller coaster that
demonstrates potential and kinetic energy at various points.
AGENDA MONDAY
1. Finish and Turn in Roller Coaster drawing with measurements
and points labeled:
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Point of most potential energy
Point of most kinetic energy
Point(s) where kinetic is transforming to potential
Point(s) where potential is transforming to kinetic
2. Sign out a ChromeBook and complete Gravity Pitch Gizmo
and Gravity Force Lab. (See my teacher website for links to these
activities.)
DO NOW TUESDAY
Login in:
kahoot.it
Learning Target:
I can illustrate mastery of energy and
gravity learning targets on a written
test.
Test Day Expectations
1. All tests must be completed during the period.
(no staying after the bell)
2. Do your best
(eyes on own paper)
3. Finished?
Turn in to front cart
Pick up a Science Article and read silently.
**While reading think about the components of
the Scientific Method. OHEC**
DO NOW THURSDAY
Label a sheet in the back of your notebook with each of the
following and leave space to write answers.
Test 3 Analysis
Questions I missed:
Targets I missed:
How much I studied:
Why I studied this much:
THURSDAY AGENDA
1. Test Analysis
2. Redo Test and/or open response, if necessary
3. Write an article summary:
Read the article and write a 3 paragraph article summary
according to the instructions below:
 Paragraph 1:
 Paragraph 2:
 Paragraph 3: