Moving water is an example of what type of energy?
Mechanical energy
100
Name five electrical devices found in your home.
TV, blow dryer, cell phone, radio, refridgerator
100
What is direct current?
Direct current is current that can only flow in one direction
100
What does MSDS stand for?
Material Safety Data Sheet
100
Which one of these is acause of water pollution?
a) sewage
b) oil spill
c) industrial wastes
d) farm chemicals
e) all of these
200
What is electrical energy?
Electrical energy is the energy of flowing electrons
200
Where does most of our electricity come from?
Most of our electricity comes from machines called generators
200
What type of current is used in your home?
Alternating current
200
How many sections are on an MSDS?
Nine sections
200
How do laws help fight water pollution?
They restrict what ends up in our water supply.
300
Give three examples of where atomic energy can be found.
Atomic bomb, nuclear power plant, and the sun
300
What do electrons move along?
Electrons move along a path called a circuit
300
Name four sources of direct current.
Batteries, solar sells, fuel cells, and some typs of genarators
300
How often must an MSDS be updated?
Every three years or within 90 days if new information becomes known about the material.
300
When does water pollution occur?
Water pollution occurs when harmful substances enter the hydrosphere.
400
What happens to energy that is not used?
Energy that is not used is given off in the form of heat
400
What is current electricity?
The electricity that works all our elecrical appliances is called current electricity
400
What can a transformer do?
A transformer can take a low-voltage current and step it up to a high voltage current, and vice versa
400
Where would you look to find the flammability rating on a MSDS?
Hazard rating-diamond
400
How can household hazardous waste's be harmful when poured down the drain?
These waste's can kill the microbes that are used in sewage treatment plants to break down waste's.
500
What is the difference between potential energy and kinetic energy?
Potential energy is energy that is stored and kinetic energy is energy in action
500
What is found in the center of a battery?
A carbon rod
500
What is the limitation with DC current?
The limitation is that the power plants can only send DC electricity about a mile before the electricy begins to loose power.
500
What five things must an MSDS tell you?
An MSDS must tell you about the materials, its hazards, how to use it safty, how to store it safly, and what to do in a emergency.
500
Why should old medications not be poured down the drain?
Old medications shouldn't be poured down the drain because the sewage treatment plants aren't made for filtering out medications, so that old medication gets returned into our drinking water.