Motion
What is the force that pulls objects towards the earth
gravity
What is a continual loop that guides electricity called
a circuit
Which law says "for every reaction there is a equal and opposite reaction"
3rd Law
What are the fields generated by the human body?
Gravitational Field and Electromagnetic field
The flow of electrons is called what?
Current
The resistance that objects encounter as they move across a surface and eventually cause a stop
Friction
What materials prevent the flow of electrons
insulator
What does F=MA mean?
Force equals mass times acceleration
On a Magnet what are the ends of the magnet called
Poles
What can you do to see the magnetic waves that come off of a magnet
sprinkle it with iron filings
The resistance to movement
Intertia
What materials allow for the easy flow of electrons
conductors
if you are falling what force provides the acceleration
gravity
Why do opposite poles of magnets attract each other
Electrons flow from the north pole to the south pole and will go the shortest route
if an object has a mass of 5 kilograms and accelerates at 3 meters per second squared what is the force generated? (unit of measure matters)
15 Newtons
How does the size of a planet effect the force of gravity
the bigger the planet the greater the force of gravity
What do these terms mean:
Load, Power source, switch
Load: what is powered
Power source: What powers the load
Switch: controls opening and closing a circuit
Provide and example of each of the three laws
Answers vary
They each become a new magnet with two poles
Objects at rest stay at rest, objects in motion stay in motion unless acted upon by an outside force is that Law
1st/Law of inertia
how do gravity, mass, and inertia work together to stop an object from moving
The greater the mass and object has the more inertia the object has to overcome. Gravity also increases friction of the moving object.
What are the main reasons to cover a wire with a insulator
protect others from getting shocked and/or keep electrons inside the wire
What are newtons three laws of motion (with proper law identification)
1st - things i motion....
2nd - F=MA
3rd - Equal and opposite...
Explain what happens when you place a magnet near a compass
the compass points to the magnets north pole
Why does keeping a key card in the same pocket as your cell phone have a chance of erasing the key card?
The Electromagnetic field from the phone can scramble the card.