Energy
This type of energy is responsible for pushing windmills
Wind energy
A static charge comes from the movement of which subatomic particle?
Electrons
The type of circuit that has only one pathway is called:
series circuit
The type of energy that we get from food is
Chemical energy
Name one source of primary energy
Radiant, chemical, mechanical, thermal, nuclear, electrical
A natural source of static electricity is:
Lightning
An electrical current is created by the flow of
electrons
A toaster is plugged into the wall. What type of energy is the electrical energy from the wall immediately converted into?
Thermal energy
What is it called when energy is wasted?
Dissipation
An object has 4 electrons and 7 protons. What is its charge?
+3 (positive)
The most common element used in conductors is:
copper
In a series circuit there are 4 light bulbs. One light bulb is removed, and the lights are turned on. How many light bulbs are shining?
0
What is the most important source of energy on Earth?
The sun
An object has a charge of -1. What would you do in order to change its charge to +2?
In a parallel circuit, path A has 2 light bulbs, and path B has 3 light bulbs. The whole circuit is turned on, and the final light bulb in path B is removed. How many light bulbs are still on?
2
A balloon has a charge of +3. How would you change it to have a charge of -3?
Add 6 electrons
What is the name of the law that states that energy cannot be destroyed nor created?
The Law of Conservation of Energy
You rub a balloon on your head and hold it up to the wall to make it stick. What happens to the particles on the wall that allows the balloon to stick to it?
The electrons on the wall slide out of the way when the electrons from the balloon come near it. The electrons on the balloon then stick to the protons on the wall.
Every circuit needs the following:
Power source, switch, load
Which type of circuits do residential buildings typically use? Why? (Need to answer both parts to get the full mark)
Parallel, because it ensures that not all electrical devices are being controlled by one switch; if one light is turned off, it won't turn off every other light in the building