The amount of force applied over a given area on an object
What is pressure?
100
The attraction between particles of a fluid and another substance so that the fluid clings to it.
What is adhesion?
100
The viscosity of a liquid decreases as it is heated, and increases as it is cooled.
What is the effect of temperature on viscocity in liquids?
100
Adding particles such as sugar to a fluid can often increase viscosity.
True
200
This type of force is equal in strength and oppose each other in direction while the other type of force can cause an object to start moving, speed up or slow down the object, or change direction of its movement.
What is the difference between a balanced force and an unbalanced force?
200
P=F/A
What is the formula for measuring pressure?
200
The property of fluids that makes the particles hold together because they are attracted to each other.
What is cohesion?
200
Property of a liquid in which the surface of the liquid acts like a thin skin.
What is surface tension?
200
When particles are heated, the particles spread farther apart, then there's more attraction between particles, and less friction, therefore the viscocity decreases.
False, there is less attraction between the molecules
300
_________ stays the same no matter where you are in the universe while ___________ depends on the gravitational force pulling down on you.
What is mass and weight?
300
When air pressure outside the can is greater than the air pressure inside the can.
What is implosion?
300
Water drops adhere to spider webs because of _________
What is adhesion?
300
You can compare viscocity using this.
What is flow rate?
300
Mass and weight are indirectly proportional
False, Mass and weight are directly proportional.
400
It is a measuring unit for force.
What is a newton?
400
Ok. Lets change things up a bit.
Take out your calculator and calculate the following equation. REMEMBER TO GIVE THE FORMULA, WORK, AND ANSWER!
A choir sings at a auditorium while standing on a 4m by 30m platform. The weight of the choir is 3450 N. What pressure does the platform put on the auditorium?
P=F/A
F=3450N
A=4mx30m=120m2
3450/120=28.75 Pa
400
Water molecules have ________, which means that one end of each molecule is slightly positive and the other end is slightly negative.
What is polarity?
400
The resistance of a fluid to flow
What is viscosity?
400
A game of tug-a-war with a rope that is 10m long is a form of action-at-a-distance force
False, it is a form of contact forces.
500
Gravitational force, Electrostatic force, Magnetic force
What are the three action-at-a-distance forces?
500
A change of shape without being forced into a smaller volume
What is deformation?
500
The positive ends of the water molecules are attracted to the negatively charged rod, drawing the stream of water toward the rod. This is an act of ________