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Middle School

Projectile Motion of an Object

Submitted by PocketLab on Thu, 06/01/2017 - 19:22

Exploration

When an object is in free fall, the only force acting on the object is gravity. In general terms, an object moving upward is not considered “falling,” however, if gravity is the only force acting on the object (air resistance being negligible) then the object is in fact in a state of free fall. The projectile motion of an object is the trajectory of an object in free fall near Earth’s surface after being thrown or launched in the air. The curved path of the projectile is under the effect of gravity only after being launched.

Grade Level

Energy Transfer: Kinetic Energy to Thermal Energy

Submitted by PocketLab on Thu, 06/01/2017 - 19:09

Exploration

The law of conservation of energy states that the total energy of an isolated system remains constant. Over time, all energy is conserved. It is neither created nor destroyed-instead it transfers from one form to another. When shaking a jar of sand, what happens to the temperature of the sand? Explore how this relates to the law of conservation of energy.

Objective

Grade Level

Potential Energy to Kinetic Energy Experiment: Gravity

Submitted by PocketLab on Thu, 06/01/2017 - 19:05

Energy Transfer Experiment: Gravitational Potential Energy to Kinetic Energy

Does a falling object have potential energy or kinetic energy or both? 

In other potential energy experiments, we demonstrated the  Law of Conservation of Energy: energy can neither be created nor destroyed, but instead, it changes from one form to another. 

Let's take a look at the role of gravity in energy transfer. 

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Grade Level

Energy Transfer: Elastic Potential Energy to Kinetic Energy

Submitted by PocketLab on Thu, 06/01/2017 - 18:41

Exploration

The law of conservation of energy tells us that energy can neither be created nor destroyed. Instead it changes from one form of energy to another. Potential energy is energy that is stored in an object. Potential energy can transfer into other forms of energy, like kinetic energy. Kinetic energy is energy in an object because of its motion.

Subject
Grade Level

Linear Motion: Position, Velocity, and Acceleration

Submitted by PocketLab on Thu, 06/01/2017 - 18:30

Exploration

What is velocity? Velocity is often defined as speed with direction and speed is often defined as how fast or slow an object is traveling. But what exactly does being fast or slow mean? How can we represent an object’s velocity with an equation, graph, or other model? What is acceleration?

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Grade Level

Newton's Laws of Motion with PocketLab and Estes Air Rocket

Submitted by PocketLab on Thu, 06/01/2017 - 18:19

Exploration Part 1

Previously you learned that the net force acting on an object is related to the object’s motion. The net force determines whether the velocity of an object will change. This is described in Newton’s First Law of Motion:

“An object at rest will remain at rest or an object in motion will remain in uniform motion unless acted upon by an outside force”.

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Grade Level

Crash Cushion Investigation

Submitted by PocketLab on Thu, 06/01/2017 - 18:01

Exploration:

Nearly 1.3 million people die from car accidents worldwide each year, according to the World Health Organization. In order to reduce traffic fatalities high-speed roadways must be made safer. Building crash cushions along highways that reduce the impact force experienced by the passengers of the car in a crash can save lives. But how should these cushions be built?

Middle School Science Balloon Powered Car

Submitted by DaveBakker on Mon, 05/29/2017 - 17:01

Phenomena or Driving Question: Make a vehicle that travels one meter powered only by two balloons

Lesson description:  In this unit of study, Newton’s Laws will be used to explain the forces and motions of objects on Earth and in Space.  This Lesson is the Engineering design project at the end of the unit.

PE’s addressed: MS-PS2-1, MS-PS-2-2, MS-ETS1-1, MS-ETS1-4

This lesson is courtesy of Heather Wygant and Susan Paulsen, Santa Clara, CA

You can find an overview of the lesson here: http://bit.ly/2oeSMvL

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Grade Level