Welcome to Science 71

June 9, 2014 (169)Need: Books/Notebooks

Trivia RAY: Imagine, if you will, a long freight train. It's pulled into the train yard and all

the workers get out to go to the bathroom. They get back in and the engineer opens the throttle and the train starts to pull away from the yard, when they realize the caboose has a problem. The brake is frozen on one of the wheels of the caboose. The wheel is being dragged and there's sparks and smoke.

TOM: Yeah.

RAY: And someone standing there says, "Stop the train." So, they manage to signal to the engineer to stop the train. They can't fix it, so they just cut the caboose loose. They remove it and they give him the go ahead. He gives it the throttle. The train doesn't move. He gives it more throttle. It doesn't move.

What's happening is the train isn't moving, but his wheels are spinning. The cars aren't moving. There's nothing wrong with any of the remaining cars and there's nothing wrong with the engine, but there is something wrong with the engineer.

TOM: Wow. This is good.

RAY: The question is, what's wrong?

Homework

Please check out the teams websitehttp://homeworkteam71.wikispaces

.com/In New Textbook (Motion, Forces, and Energy) read over pages 16-25.

Vocabulary Puzzle – Quiz on Wednesday!

C-Layer due by Wednesday

Objective Begin to discover Motion and Forces

As we look over these two topics, we are looking to discover how Forces create Motion, and Motion can create Forces.

How objects move and stay still Relative motion, Newton’s Laws

Objective in Layman’s

How is Motion related to forces acting upon an object?

What happens when there is more than one force acting upon an object?

Agenda Check Homework Hallway Bell work –

Describing Motion! Check Bell Work Discuss Layers/ Lesson of the Day-

Speed of Wind Turbine Blades

Speed = Distance covered per a period of time S= d/t

Given that the tip of the blades covers a distance of 300 meters in 4.2 seconds, and the mid-blade section covers 20o meters in the same time. What section of the blade is fastest?

A. Mid-Section B. Tip C. Both Equal

Speed of Wind Turbine Blades

Speed = Distance covered per a period of time S= d/t

Given that the tip of the blades covers a distance of 300 meters in 4.2 seconds, and the mid-blade section covers 20o meters in the same time. What is the speed of the tip?

(Include units)A. 47.6 m/s C. 71.4 m/sB. 71.4 D. 840 m/s E. Not here

Not Sure

Velocity of a Fish

As we move into our new unit, Speed and Velocity will be discussed quite often.

Velocity is a combination of Speed and a Direction.

Example – the car moved at 50 mph East

Velocity and FishSay you are scuba diving and you are

relaxing near a coral reef. You notice the tidal current moving to the right, and you see a school of fish swim left. From your

perspective (Not Moving) what is the velocity of the school?

TIDE 1.4 m/s East

SCHOOL 2.7 m/s West

Energy Audit Extra Credit Energy Audit Worksheet. Construct one for Vacation Home

▪ Imagine you have been hired to audit the energy use of a vacation home in either Vermont (Winter Home) or Cape Cod (Summer Home)

▪ Come up with ideas on how the owners can same money and energy

▪ Creatively construct a scoring sheet.▪You may use the audit from Friday as a guide

Bell workHow many answers are most

related to Forces? (Answer with a number)

A.Apple in treeB.Soda on a tableC.YodaD.Boy carrying paint bucketE.Bowling ball rolling down laneF.Alex Flexing his muscles!G.Kira Laughing while blowing out

candlesH. None of the above

Bell workIf you were to push on a desk

here in class, and it did not move, how many forces are acting in that situation?

Enter in a number

Layers

Please look at New Unit Layer List

Ch 1 section 1 page 16-25Ch 1 Section 3 page 34-38Ch 2 Section 1 page 44-49Ch 2 Section 2 page 52-54Ch 2 Section 3 page 55-61

Essential Questions1. Why/How can you describe a motion?

Essential Questions2. What is a Force? What can it do?

Essential Questions3. What happens to an object when only 1 force acts upon it?

Essential Questions4. What happens to an object when more than 1 force acts upon it?

Essential Questions5. Why is Friction good and bad?

Bell WorkCalculate the Slope of a line that has a Rise of 8 meters

And a Run of 2 seconds

Is this a Steep or Shallow line?

Bell Work AnswerThe Slope of this line would be 4 meters per second.

This line would be Steep!

HomeWorkMake sure your Vocabulary Puzzle is complete and Practice tonight.

Complete Wrksheet 17 – C2

Homework

Begin cutting out C1 Vocabulary Puzzle.

Begin Practicing assembling the puzzle.