24 FINAL Flashcards
How would you define potential energy? What about kinetic energy?
Kinetic: energy moving and actively causing changes
Potential: energy stored in position
What are some different types of potential energy?
- Chemical
- Gravitational
- Elastic
- Nuclear
What are the types of kinetic energy?
- sound
- light
- thermal
- electrical
- mechanical
What are the 3 parts to a electrical generator?
- Input
- Converter
- Output
What does the law of conservation of energy state?
Energy cannot be created or destroyed
What is the 2nd law of thermodynamics state?
No energy conversion is ever 100% effective
What is most common form of waste energy?
Thermal energy
What is percent efficiency?
How much imput energy Is converted into output energy with a percentage
How can you calculate percent efficiency in a energy converter
Efficiency = useful output ÷ total imput ×100
What is an electrical generator?
Uses principles of a magnet and wire to generate electricity for us to use
What are the 3 things you need for an electrical generator to work
- Magnet
- wire
- movement
What are thermoelectric power plants?
Used with a turbine
- nuclear: energy boils water to turn turbine
- Hydroelectric: moving water turns turbine
- Wind: physically moves turbine
What is power? How for you calculate it?
The rate of energy use ot the change in energy overtime
Power = energy ÷ time
P= watts
E= Joules
T= Seconds
What is a kilowatt hour? How do you calculate it?
How people measue how much energy you use in a month
E = P × T E = kilowatt- hour (kwh)
P = kilowatts. T = hours
What are communicable vs. Non-communicable diseases?
Communicable: Contagious
Non-Communicable: not Contagious
What is an epidemic vs. A pandemic?
Epidemic: only one geographical area
Pandemic: whole world
What is public health? What factors contribute?
Government preventing their citizens from getting sick
- safe drinking water
- check pollutants in the air
- prevents disease from spreading
What is an antigen vs. an antibody?
Antigen: unique proteins
Antibody: Y shaped proteins
What are the three lines of defense?
Physical defense: ex: eyelashes
Inflammatory: injury gets red and swollen
Antibodies: creates to attack pathogens
Genetics vs. Hereditary
Genetics: traits passed down from parents
Hereditary: characteristics passed down from parents
What is a genotype?
Traits that are controlled by one pair of genes are assigned a pair of letters
What are pedigree charts?
Family trees
What are mutations
Genes that can change due to radiation or dangerous chemicals
How do you read a graduated cylinder?
Before the dip at the measure line
What is a polymer?
A Long chain of molecules
They can be natural or man- made
What do the terms endothermic and exothermic mean?
Endothermic: absorb energy
Exothermic: Release energy
What are the different pieces of evidence for chemical reactions?
- Color change
- state of matter change
- energy change
- change in smell
What is law of conservation of mass?
In a chemical reaction matter is transformed not destroyed
Why does incomplete combustion happen?
Not enough oxygen is available
What are the 2 gas chemicals that contribute to acid deposition?
- Sulfur dioxide (SO²)
- nitrogen oxide (NO)
What is reaction time?
The time it takes for you to notice a hazard and act on it
What are distractors? What are their effects on reaction time?
Anything that takes your focus away from the road
Slows it greatly
What is a stimulant va a depressant?
Stimulant: keeps you awake
Depressant: makes you sleepy
What is the legal limit for BAC in Alberta?
0.08
What is whiplash and how can you prevent it?
When your neck swings back harshly
Properly placed head rest
What are the different types of safety features in cars?
- Airbags
- Seatbelts
- Emergency brake
What are the different road safety features the government puts into place to decrease injury?
- Crash cushions
- guard rails
- Light poles
How do you calculate speed
Speed = distance ÷ time
V = d ÷ t
What does the slope of a graph represent?
The steepness or speed of the line
How do you calculate distance when you have speed and time?
Distance = Speed × Time
d = V × t
What is momentum, and how do you calculate it?
A measure of an objects motion and if it will stay in motion
P = M × V
P= Momentum
M= Mass
V = Speed
What is impulse? How do you calculate it?
Change in momentum
Impulse = Force × Time
What is the safest way of using impulse to slow you down
Small force, longer time
What is the law of conservation of momentum?
The total momentum of two colliding objects stays the same after the collision
