Unit 1&2
protons and neutrons are composed of smaller praticles called
what is quarks
A change in which one or more substances are converted into new substances
what is chemical reaction
1)A material in which electrons are able to move easily
2)A material in which electrons are not able to move easily
What is conduction?
What is insulator?
The number of complete waves that pass a given point in a specific amount of time.
what is Frequency?
Energy source that is replaced by natural processes faster than it is used?
What is renewable resources?
elements that are usually gasses or solids at room temperature
what is nonmetal?
Starting substances that react are called
what is reactants?
The vector sum of all the forces that act upon an object.
What is net force?
The spreading out of waves as they pass through an opening or around obstacles.
What is Diffraction?
Natural resources that cannot be replaced as quickly as they are used
What are nonrenewable resources?
The Vertical columns in the periodic table
what is groups?
the new substances produced are called
what are products?
Force that opposes the motion of objects that move through the air.
what is air resistance?
The bending of a wave caused by a change in its speed as it moves from one medium to another.
What is Refraction?
Remains of ancient plants and animals that are buried and altered over millions of years.
The horizontal rows of elements in the periodic table
what is periods?
Attraction force between any two objects that depends on the masses of the objects and distance between them
what is gravity?
what is joules?
Related to the force that causes electric charges to flow.
(measured in volts)
What is Voltage Difference?
Energy is released when the nucleus of an atom splits apart.
What is nuclear fission?
what is the mass of all substances present before a chemical change, called reactants, eqauls the mass of all the substances
What is the law of conservation mass
The sum of all of the forces acting on an object
what is Net force?
what is a magnetic field?
The current in a circuit equals the voltage difference divided by the resistance.
Provides a way to measure the resistance of objects and materials.
what is Ohm's Law?
When atomic nuclei combine at very high temperatures.
What is nuclear fusion?