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Integrated Physics Hodges Semester 1 Final
Terms in this set (98)
The physical property of objects that causes them to attract or repel each other without touching is called __________.
_________ charges attract.
_________ charges repel.
The force of attraction between charged particles is called _________.
An _________ is a space around a charged particle where the particle exerts forces on other charged particles.
Most matter is _______.
When an atom or molecule gains or loses electrons, it is called an __________.
The Law of Conservation of Electric Charge states that the total amount of electric charge in the universe is _________
Rubbing a balloon against your hair is an example of transferring charge by __________
________ is a method of transferring charge when two objects rub against each other.
___________ is a method of transferring charge when there is direct contact between materials that differ in their ability to give up or accept electrons.
_________ is the movement of electrons within a neutral object due to the electric field of a nearby charged object.
___________ leads to the build up of electric charge on objects.
The build up of electric charge on objects is known as ______.
Electrons moving through the air from your hand to a doorknob is an example of ________.
Lightning is ________ on a grand scale.
A closed loop through which current can flow is called an ________.
An example of a voltage source is a ________.
An example of a control element is a _______.
Wires or _________ can serve as a conducting path.
An _________ is anything that uses electricity.
A _________ is like a road map for an electrician.
We defined a _________ as a device that converts electrical energy to other forms of energy.
In a ______ circuit, there is only one path for the current.
In a _________ circuit, there are multiple paths for the current.
Electric ______ is a continuous flow of charge.
___________ current flows in one direction only.
_________ current changes direction in the circuit many times per second.
_______ converts the energy in sunlight to electrical energy.
The transfer of energy by waves moving through space.
A wave that consists of vibrating electric & magnetic fields.
Electric Field (2)
Extends outward from all charged patricles.
Also known as transverse waves.
Transfer of thermal energy between particles of matter that are touching
Warmer objects to cooler objects
Thermal energy always moves from ________.
A loop of moving particles in a fluid is called a ___________ current.
__________ is the only way of transferring thermal energy that doesn't require matter.
Most ovens in our homes work due to _______.
Energy stored in the bonds between atoms.
Form of Kinetic Energy (KE) comes from the motion of electrons.
Stored in nucleus of atoms.
Splitting of an atom.
Work is only done
In physics _________________ when a force acts on an object moves in the direction of the force.
Rate at which work is done.
Anything from nature.
Made from the remains of once living organisms.
Examples of fossil fuels
Oil, Natural gas, and coal.
Natural resources that are limited in supply and take millions of years to replace.
An example of electromagnetic energy
A speeding train
Energy stored in the bonds between atoms is called _______.
SI unit of energy
The two types of mechanical energy
Kinetic & Potential
When chemical bonds are broken _____ energy is released.
Energy stored in the nucleus of an atom is called _____ energy.
Splitting of an atom
Energy that occurs when two nuclei fuse together is called
Another word for thermal energy
____________ energy is energy that the sun and other stars release into space.
Energy of vibration is also called _______ energy.
When energy changes from one form to another, an ________ has occurred.
When energy changes from one form to another, NO energy is _______.
Kinetic Energy formula
KE = 1/2 mv(squared)
Energy that is stored due to the object's shape/position.
Type of Potential Energy
Gravitational - energy stored due to an object's position above earth.
Elastic Potential Energy
Energy stored due to an object's shape.
Something that has the ability to cause change in matter. (the ability to do work)
Work and Energy are measured in...
energy of objects that are moving or that have potential energy to move.
Work is the product of
force and distance.
Power is equal to work divided by
In physics, _______ is only accomplished when a force acts on an object and causes the object to move.
______ is defined at the rate at which work is done.
A man uses 20 N of force to move an object 5 m. How much work did he do?
An object does 500 J of work in 10 seconds. How much power was used?
A 0.1 kg bird is flying at 8 m/s. What is its kinetic energy?
KE = (1/2)(0.1)(64) = 3.2 J.
Energy is defined as the ability to do _____.
The two types of potential energy are...
elastic & gravitational.
Newton's First Law
Law of Inertia
The tendency of an object to resist a change in its state of rest or motion is called...
Objects with more mass have more _____.
Which has more inertia?
A. Shopping cart full of groceries
B. An empty shopping cart
C. They have the same amount of inertia.
The answer is A.
If the net force acting on an object is not zero, then the forces acting on the object are said to be _______.
C. Too complex to analyze with the given information.
The answer is B. Unbalanced.
Newton's First Law says that...
objects continue in their state of rest, or of the motion they already have unless they are acted on by an unbalanced force.
You are walking around your town. First, you walk North from your starting position and walk for 2 hours at 1 km/h. Then, you walk West for 1 hour at 1 km/h. Finally, you walk South for 1 hour at 2 km/h. What is your new position relative to your starting position?
1k West. (if you have trouble with this problem, make a map!)
What is your average speed if you walk 2000 m in 1200 seconds?
If net force = 0, then...
no change in rest/motion.
Inertia is the tendency...
of an object to resist a change in it's state of rest/motion.
a measure of inertia.
Newton's Second Law
describes the relationship between force, mass and acceleration.
Which of the following is equivalent to 1 Newton?
A. 1 m/s(squared)
B. 1 m/s
C. 1 kg m/s(squared)
The answer is C.
In Newton's Second law...
The relationship between mass and acceleration is inverse.
Newton's Third Law
also called the action/reaction law.
True or false?
Action/reaction forces cancel like balanced forces.
What is the momentum of a 25 kg bird moving at a speed of 6 m/s?
Newton's Third Law formula
P = M/V
Newton's Second Law formula
F = MA
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