Definitions
How a fluid moves or flows
viscosity
What are some of the properties of fluids we have studied? (3)
viscosity, buoyancy and density
An example of a streamlined shape
answers may vary
Which of these two animals would have an easier time walking through deep snow
- caribou
- pronghorn
A caribou ---> WHY???
Why did First Nations peoples create snow shoes?
they observed animals walking on snow easily and created snowshoes to reflect the characteristics of the animals feet
the measure of the force of gravity on an object
Weight
Name a situation you would use a pump
Drag
The weight of an object or animal is a force caused by
gravity
The invention of snow shoes allowed First Nations people to do what
transport themselves and goods in winter without sinking in the snow
A measure of how much space an object takes up
volume
This device uses water or some other liquid in motion
Hydraulic device
Water resistance uses this to slow things down when moving
Friction
True or False?
When two objects have similar weight, the amount of pressure each object exerts on a surface depends on the size of the area where the object contacts the surface.
True
First Nation peoples stories are passed down from generation to generation by whom
Traditional Knowledge Keepers
moves a fluid through or into something by raising the pressure of the fluid
This device uses air or other gases
Pneumatic pump
The forces which act upon an object's movement in water
Water resistance
Force applied over a large area creates a small amount of pressure on the surface.
True
Scientifically describe a snow shoe (hint: surface area and pressure)
the distribution of the weight of the hunter across a larger surface area, causing less pressure on the snow.
the amount of force applied to a particular area or force per unit area.
Pressure
Two answers...
The amount of force being applied is measured in
The size of an area the force pushes or pulls on is measured in
Newtons (N)
Square Meters (m2)
The concept that the more surface area that you present in the direction of movement, the more force you need to overcome the resistance.
Frontal Resistance
The force applied over a small area creates a large amount of pressure on the surface.
True
Traditional snowshoes were made of two basic parts, what might they be?
frame of hardwood and netting made of sinew or hide