Download Level 4 The student will understand: That every object exerts a

Level 4
The student will understand:
That every object exerts a gravitational force on every other
object and that the force depends on how much mass the
object has and how far apart they are.
Unit Assessment
Level 3
Students will understand:
That there are different forces including contact and those
acting at a distance
Newton Mobile
Lab: Spin the Wheel
Lab: Sideways force
Practice 5.4
Notes 5.4
Forces Foldable
Workbook pages 307 – 320
Level 2
Students will understand:
That unbalanced forces cause objects to change speed,
direction, or both
Lab 2: Pushes, Pulls and Motion
Practice 5.3
Notes 5.3
Workbook Pages 5.3 299 - 306
Video: Magic School Bus
Lab 5: Forever Away
Level 1
Students will understand that:
Practice 5.2
Notes 5.2
Workbook pages 285 - 298
Constant speed can be measured and graphed
Entry
Brainstorm: forces and their resulting motion
Students will understand that:
Page Keeley Probe: Talking About Forces
Forces affect motion
Forces and Motion Road Map
Vocabulary
Position
Reference point
Motion
Speed
Velocity
Vector
Acceleration
Centripetal acceleration
Force
Net force
Inertia
Gravity
Free fall
Orbit
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What is speed?
How can the speed of an object be described?
What is motion?
How can distance be measured?
What formula can be used to dind average speed?
What does a graph showing constant speed look like?
How do we measure changing velocity?
How is average acceleration caluculated?
How can accelerating objects change velocity?
Draw an example of a force acting on an object.
What is force?
What units are used to measure force?
How can forces act?
What is a force that holds things to Earth’s surface?
How do multiple forces interact?
Name 4 ways forces can act on an object.
What is another name for Newton’s first law?
How do force pairs act?
What do we call the two forces in a force pair?
Why don’t force pairs have equal effects?
What is gravity?
What two factors determins the force of gravity?
What information is needed to describe the speed of an object?
What information do you need to know to describe and object’s velocity?
When acceleration and velocity are in the same directions, the speed will ________________.
When acceleration and velocity are in opposing directions, the speed will ________________.
Objects traveling in _________________ motion experience centripetal acceleration.
How do you determine the net force on an object if all forces act in the same direction?
Balanced forces ______________ cnage motion.
Unbalanced forces _______________ to produce accleration.
Net force is a ___________________ of forces.
What has to happen for a feather and a ball to fall at the same rate?
The gravitational attraction between objects will ____________ if one object aquires more mass.
The gravitational attraction between two objects will _________________ if the objects move farter apart.
What two motions combine to produce an orbit?
Using a Venn diagram, compare and contrast speed and velocity.
Amy and Elliot left the school at the same time. Amy lives farther away than Elliot but both students arrive home at the same time.
Compare their speed.
A horse is galloping at 13 m/s. Five seconds later, after climbing the hill, the horse is moving at 5.5 m/s. Find the acceleration that
describes this change in velocity.
An acceleration in the direction of motion increases speed, and an acceleration opposite to the direction of motion decreases speed.
What direction is the acceleration in cetripetal acceleration, where speed does not change but direction does?
Using a Venn Diagram, compare and contrast weight and mass.
Explain what could happen to an object in orbit without gravity pulling it down.
Why don’t satellites in orbit fall to the ground? Why don’t they fly off in to space?
Why are large astronomical bodies in space round?
How would decreasing the time it takes you to run a certain distance affect your speed?
Look around you to find an object in motion. Describe to object’s motion by discussing its position and direction of motion in
relation to a reference point. Then, explain how you could determine the object’s speed.
Explain why a moving object cannot come to a stop instantaneously (in zero seconds). (Think about the acceleration that would be
required)
Imagine that you have two marbles on a table. You roll one marble toward another. When the two marbles collide, the marble at
rest begins to roll. What do you think caused the second marble to move? What do you think causes the marbles to stop rolling?
Imagine that a scientist discovered a way to make a frictionless surface. What would be some useful applications for this discovery?
A 6 kg ball and a 4 kg ball are acted on by forces of equal size. If the large ball accelerates 2m/s what acceleration will the small ball
undergo?
Use Newton’s first law of motion to explain why air bags in cars are important during head on collisions.
The weight od 80 kg of mass on Mercury is 296 N, almost identical to the weight of the same mass on Mars. But Mercury has much
less Mass than Mars! Explain how this could be. (What else could affect gravitational force?)
Imagine tying a string to a ball and twirling it around you How is this similar to the moon orbiting the Earth? In this example, what is
providing the constantly changing, inward force?
If Earth were replaced by an object with the same mass but much smaller in size, would the moon continue to orbit the new object,
fall in to it, or fly off in to space? Why?