5 - Evolution of Bicycles
The first bicycle was created in ________.
1817
Why are there more skyscrapers in cities than farms?
Skyscrapers are tall buildings with small bases, which means they can hold a lot of people in them without taking up much space.
Farms need a lot of space on the ground, which is harder to find in more populated areas
Air is made up of ___________ and ___________.
Atoms and particles
What are the 4 forces of flight?
Lift - makes something go up
Weight - force pulling the object down
Thrust - force that makes it go forward
Drag - force that pulls/drags on the object
Bicycles were invented as an alternative to ______________.
Horseback riding for agricultural jobs
What does sustainability mean?
Sustainability - using the natural resources around us without depleting them
What are the three properties of air?
1. Air has mass – it is made of tiny particles of matter
2. Air takes up space – because air is made up of particles of matter these particles take up space
3. Air exerts pressure – it presses down against all surfaces that it comes in contact with
__________ moving air under the wing of an airplane creates ____________.
Slower, lift
Bicycles are __________ machines because they are a combination of two or more simple machines.
Bikes are a combination of _______________ and _______________ .
Complex
Wheel and axel, pulley
What does accessibility mean?
The practice of making information, activities, and/or environments usable for as many people as possible.
What is the difference between flying and gliding?
Flying requires constant thrust or propulsion, gliding relies on short bursts of propulsion, then falling
What is Bernoulli’s principle?
Faster moving air will draw in the slower moving air around it.
List one pro and one con about using cars and electric cars.
Cars
Pro: most common transportation, can go wherever you like, lots of freedom
Con: Greenhouse gases are bad for the environment
Electric Cars
Pro: better for the environment, less greenhouse gases
Con: Harder to find charging stations, not great for rural living
What is a renewable source of energy that you can see on Wolfe Island?
Windmills harnessing wind energy
Why is the term "flying squirrel" technically incorrect?
Flying squirrels technically only glide, since they cannot propel themselves when they are in the air.
What is an airfoil?
The shape of an airplane’s wing that allows high air pressure to go underneath the wing, causing it to rise.
What is the condition and the action in this conditional sentence?
If the field trip is going to be in a different city, we will take a school bus to get there.
Condition - If the field trip is going to be in a different city
Action - we will take a school bus to get there.
What are some things you need to keep in mind when you are building a city in regards to waste management? List two things.
-Where is all of the waste going? (waste management site, should not be close to residential areas)
-How do we collect the waste? (garbage and recycling collection, calendar for different weeks)
-What do we do with all of the waste? (recycle, repurpose, dispose of underground)
-How do we make sure its not making anyone sick? (keep away from waterways, residential areas, fenced off area to prevent injuries)
What animal group did we model helicopter or drone flight from?
Insects, because of how they hover
If you create a paper airplane and the plane does a nosedive into the ground, you will need to create more _____ for your plane.
Lift