Transcript Thinking Like and Engineer

Thinking Like and
Engineer
Inventions and Innovations
Newton’s Three Laws of Motion
►What
do you think the Three Laws
of Motion are?
►Who
is Sir Isaac Newton?
Sir Isaac Newton
Cambridge College, in
Great Britain, graduate
who was very interested in
mathematics, gravity, and
optics.
► His discovery of the three
laws of motion allowed for
mechanical engineers to
create new inventions
during the Industrial
Revolution in the 1600’s.
► How will you use his three
laws of motion?
►
First Law of Motion
► The
Law of Inertia- without a force, like a
push or a pull, an object will not move or
stop moving.
► All matter- a rock, a house, even you have
inertia.
► Inertia is the resistance an object has to the
change of motion. Do you think a large rock
or a piece of paper has more inertia?
What are examples of
force?
http://www.youtube.com/watch?v=DEoGS
V41q-M
Forces
►A
push
► Pull
► Friction
► Gravity
► Electrical Forces
► Magnets
► Wind
May the Force be with
you……..
Inertia Coin Magic
► What
do you think will happen to the coins?
► What
actually happened to the coins?
First Law Continued…..
How might an
engineer or inventor
use this law?
Second Law of Motion
► F=MA
The greater the force on an object, the
greater the change of motion. The greater the
mass of an object, the greater force needed to
change it’s motion.
► Can you hit a baseball further than a two year old?
Why?
► Is it harder to push a chair with or with someone
in the chair?
► http://www.youtube.com/watch?v=FgOiXrwYHrI
Third Law of Motion
► For
every action, there is an equal but
opposite reaction.
► When you throw two balls at each other,
what happens to the balls?
► What happens when you run into a wall?
► http://www.youtube.com/watch?v=_sr3hBx
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Eraser-Paper Race
► Do
you think the paper or eraser has more inertia?
► With
a gentle flick, which one will travel further?
► Which
► Do
item has more mass?
you think mass and inertia have a relationship?
Balloon Experiment
► Predict
what will happen if I threw two
balloons at each other?
► Using
the third law explain how you knew
what was going to happen.
Engineer and Inventors?
How might an engineer
or inventor use the
second and third laws?
Remember….
Everyone is an
engineer and an
inventor!
Vocabulary Review
► Inertia:
is the resistance of any physical
object to a change in its state of motion or
rest, or the tendency of an object to resist
any change in its motion
► Motion: the act of changing location from
one place to another
► Force: A push or pull exerted on an object
Vocabulary Continued
► Acceleration:
the rate of change in
speed… getting onto the highway has more
acceleration than turning into a
neighborhood.
► Friction: Friction is resistance to a moving
object. Friction is caused by one surface
touching another. Ask the student if it
would be easier to roller skate on a smooth
roller skating rink, or a gravel road. Why?
Next Steps!
► You
will be moving on to your engineering
project of a Bridge. All materials will be
provided.
► With the bridge, you must add the following
vocab: aesthetics, gravity, compression,
scientific process, construction, mass,
conditions, design and function. Please put
these in your notebook, index cards or on
the flashcard website.(Scholastic.com)
► Bridges will begin next week!