Paper Planes

Paper planes

Making a paper plane

Q. What are the forces acting on a paper plane?

There are 4 forces acting on a paper plane.

 

Thrust - pushes the plane forward
Lift - pushes the plane up.
Gravity - (or Weight) pulls the plane down.
Drag - pushes the plane backwards.

Challenge:  To find a paper plane that beats the rest of the class.

M

Aim: I want to find a paper plane design that can fly the furthest and beat the rest of my class.

Monday, 20 March 2017

Solve the crime

The case of the Barefoot Burglar

http://www.cyberbee.com/whodunnit/crimescene.html

In groups of 4 or five you are going to need to use your forensic knowledge to solve a crime.
Using the clues found at the crime scene, determine which of the four suspects is the "barefooted burglar"? 
What do you think was the motive for this crime? 
Write the results of your findings and convince a jury of your peers.

At approximately 7:15 a.m., Friday morning, Mrs. King, the science teacher, thought something was fishy as she walked down the hall and noticed that her door was open. She walked into her classroom and immediately discovered that the small aquarium had been broken and her prized gold fish were gasping in the sink. Beside the broken aquarium were the shattered remains of the pink piggy bank that had been on the shelf above the aquarium. A can of blue paint was spilled on the floor. Footprints of a barefooted burglar led to an open window. Bits of a white powdery substance were found next to the broken, empty, piggy bank. The only other item found was a half-eaten large chunk of chocolate candy.

When the police arrived they immediately began to gather forensic evidence.

• Sticky fingerprints were lifted from the aquarium and piggy bank. The painted footprints were measured. The chunk of chocolate candy was collected for examination. It appeared there were teeth imprints.
• The white powdery substance by the piggy bank was carefully placed in a plastic bag and taken to the forensic chemist for identification .

Dan the man: 

Name	Motive	Clues
Lou Lou		Clumsy, tends to slip and break things, (Glass Pig)
Jake the Jock		Holes in teeth, matches with chocolate teeth marks,
Peg the Leg		?
Dan the man	Needs money for new Bugle.	Holes in teeth, Matches with Chocolate. Always steals vinegar, vinegar mixes with the fine white powder. Always steals chocolate kisses, kisses at crime scene.

Findings: Lou is Clumsy, tends to slip and break things, (Glass Pig). Jake the jock is Holes in teeth, matches with chocolate teeth marks.Dan the man was the bugler because we find a lot of clues about Dan the man and especially the vinegar and the chocolate kisses. Peg the Leg i don't know about her.

Gravity - Helicopter experiment

The Helicopter Expriment

March 28, 2017

 Gravity

https://www.youtube.com/watch?v=mn34mnnDnKU

Newton has 3 Laws of Motion.

1. An object at rest will remain at rest unless acted on by an unbalanced force. An object in motion continues in motion with the same speed and in the same direction unless acted upon by an unbalanced force.

2.Acceleration is produced when a force acts on a mass. The greater the mass (of the object being accelerated) the greater the amount of force needed (to accelerate the object).

3. For every action there is an equal and opposite re-action.

Aim: To make a helicopter and look at the force of gravity.

Hypothesis: The size of the wings will effect the speed that the helicopter travels.

Equipment:

1. Stopwatch - use the Google stopwatch on your chromebook
2. Helicopter template / paper
3. Drawing pin

Method:

1. Make the helicopter by cutting out the template.
2. Drop the helicopter from a height. Use the same person.
3. Time each drop and record the time when it hits the floor.
4. Each time it is dropped you will make a change to its form.

• With a paperclip on the bottom.
• Use heavier material ( Cardboard)
• Cut the body in half to give it a short body.
• Cut the wings to give it short wings

1. Time each time you drop it.
2. Record the findings on a chart

Type	Time
Paperclip	1.58
Cardboard	1.84
Short wings	1.21
short body	1.70

Findings: What do the findings from your four flights say? Write about them.

Paperclip was not working, Cardboard was the longest, The short wings was the slowest, and Short was a bit cranky at flying.

Summary: What was the best result? ( The longest time will be the 

The longest was the Cardboard

Monday, 27 March 2017

Forces

Forces
1. A title
2. A defintion
3. 6+ pictures of forces around the home

Rip    Kick






Throwing    
                                                                       Rocking






 Lifting


 Rotate









The definition of Forces
 A force can cause an object to accelerate, slow down, remain in place, or change shape.