4/9/2011It’s Only Rocket ScienceGuest: Dr. Amy Foster

Time Description Moderator Notes

9:30am – 10:00am Set-up at BarclayHopkins volunteer arrival and orientationDr. Foster arrives

Material-set up:Ami, Kristin, Blaze

10:00am – 10:10am Barclay Student Arrival; Make name-tags Morning snacks

10:10am – 10:15am Welcome and Intro of Today’s Activities

10:15am – 10:30am Dr. Foster Introduction/DiscussionMotivation/path into career; Q&A

10:30am – 10:45am Solar Power demoRocket Science Word-match game

10:45am – 11:00pm Switch and repeat

11:00am – 11:20am Solutions/Explanations and tie back into rockets Dr. Foster’s slides/demos

11:20am – 11:55am Design and build rockets*consider ratio of water to air*reinforce concepts just explained

Small groups of 3-4

11:55am – 12:00pm Second chance at Matching Game Winner launches first!

12:00pm – 12:30pm Launch outside or gym(rain location)

12:30pm – 12:45pm Concluding Remarks/ Preview of next week

12:45pm – 1:00pm Lunch

1:00pm – 1:30pm Clean-up

The sun produces heat and light throughnuclear fusion

Nearly all energy on earth can be traced to the sun

plants – photosynthesishumans – eating plants and animalsfossil fuels – decayed plants and animalsgreen energy – wind, solar, hydro

Solar cellsConvert energy from theSun (photons) to electricity (moving electrons)

Solar cells were first developed for thespace program. Energy required for:

Propulsion in spacePowering electronics

Solar cells – lighter and require lessmaintanence

Get energy from sun – do not require refueling

Exercise: Fan speed

Try illuminating the solar cell with various light sources

Sun coming through a windowflashlightroom lightshalogen light

Which light source makes the fan spin the fastest?

Does the fan spin fastest with the bright or dim light source?

Objects at rest stay at rest.

Objects in motion stay in motion ...unless acted upon by an outside force.

Newton’s First Law

of Motion

Newton’s Second Law

of Motion

A measure of how much matter is contained in an object.

 Unless altered, this remains the same whether the object is on Earth, in Earth orbit, or on the

Moon.

MASS

A change in either the speed or direction of motion.

 For example, when you step on the

accelerator pedal of a car, you cause an increase in this.

ACCELERATION

A push or a pull on an object. 

When an object is at rest, this is balanced. When an object is in

motion, this is unbalanced.

FORCE

The force of attraction between masses.

 The force that makes objects fall to

the ground.

GRAVITY

WEIGHT

 

Resistance to changes in motion. 

The more mass, the more resistance.

INERTIA

 How hard it is to stopan object in motion.

 Mass times velocity.

MOMENTUM

For every action there is an equal and opposite reaction.

Newton’s Third Law

of Motion

Reaction

Action

How do you ensure that the rocket flies in a straight line?

How do you control the change of direction?

Why do the gases coming out of the rocket move much faster than the rocket?

As fuel is consumed, what happens to the mass of the rocket?

rocket vessel material (paper or plastic) rocket vessel size (big or small bottle) amount of water in bottle launching angle air pressure (number of pumps) optional: nose cone and/or tail fins

Winner: Farthest horizontal travel distance

angle for maximum horizontal travel

air to water ratio

What is one thing you learned?What was the best part of the day?What is one thing you wish you could

have done?Will you be back next week? Answer:

YES!

Talk from Allen Herbert, CEO of Phezu LLC

Friday, 12p -2pBarclay Gym!!!45min – Stellar

Navigation

Guest: Dr. Eileen Haase Kelly Barclay Planning Committee

Ami K. Chorong Blaze Kristin Ehsan

JHU Student volunteers JHU Faculty Involvement Grant