Matter
________ is anything that has mass and takes up space. There are three main states of this: _______, _________, and ________.
Matter; solid, liquid, and gas
______ is when a solid changes to a liquid.
Melting. The particles have more energy and they are able to flow. The particles als become less dense.
Explain Density and state the formula.
Density is a ratio that compares mass to volume for a substance.
density=mass/volume
______'s ______ states that if pressure is exerted on a fluid, it will be evenly distributed throughout the fluid
Pascal's Law
______ are the smallest unit that matter can be divided into. Every solid, liquid, and gas is made of this.
Atoms
Explain viscosity.
it is a measure of a fluid's resistance to flow
45g/20cm3= 2.25g/cm3
Explain Displacement.
Displacement occurs when something takes the place of something else.
ex. if a marble was submerged in a cup of water, it would be displacing the water.
Particles that have the most energy
Gas
Give 2 examples of fluids with LOW viscosity and 2 examples with HIGH viscosity.
ex.
LOW: vinegar, milk
HIGH: honey, ketchup
If the buoyant force is at least equal to the force of gravity pulling the object to the ground, the object will _______.
When is the Pipeline Spills presentation?
When are we having the quiz?
Tuesday April 4; Thursday April 6
______ is the small, dense region consisting of protons and neutrons at the center of an atom
Nucleus
What is one factor that affects viscosity?
ex. friction, cohesion, adhesion, temperature, concentration, particle size.
Positive, Neutral, and Negative
What is the difference between pneumatic system vs hydraulic system?
Pneumatic system:
- is filled with gas
- no electricity, safer in areas where electricity cannot be used
Hydraulic system:
- is filled with liquid
- more powerful, heavy hoses
- no delay in movement
5 major points:
1. All matter is made up of tiny particles
2. The particles are always moving
3. There is space between all particles
adding heat makes particles move faster
4. All particles in a pure substance are the same. Different substances are made up of different particles
_______ ______ states the upward force that is exerted on a body immersed in a fluid is equal to the weight of the fluid displaced by the object
Archimedes' Principle.
Buoyant force = weight of displaced fluid
What is the difference between Mass and Weight?
Mass:
- can NEVER be zero
- commonly measure in kg, mg
- doesn't change according to location
Weight:
- can be zero
- measured in Newtons (N)
- Varies according to location