Prior to an experiment scientists make a(an) __________ which is an educated guess about the solution to a problem.
hypothesis
data
scientific theory
A well tested idea that explains and connects observations, hypotheses and events in nature is a scientific __________
theory
observation
Observations and measurements recorded during an experiment are considered
Dependent variable
control variable
The factor that is expected to change in an experiment is called a(an)
independent variable
dependent variale
The scientist changes the __________ __________ on purpose during the experiment
dependent variable
A logical conclusion based on observations, prior knowledge and data is a(an)
inference
A __________ is a statement that describes what scientists expect to happen every time under a certain set of conditions
scientific law
When information is gathered through use of your five senses, you are making a(an)
Which of the following is the correct order of the scientific method steps?
Determine a problem, Arrive at a conclusion, Test the hypothesis, Research the problem, Analyze data, Make a hypothesis
Determine a problem, Make a hypothesis, Test the hypothesis, Research the problem, Analyze data, Arrive at a conclusion
Determine a problem, Research the problem, Make a hypothesis, Test the hypothesis, Analyze data, Arrive at a conclusion
The central core of the atom is called its
nucleus
electron cloud
The Proton is the subatomic particle that carries a _____ charge
negative
positive
The Neutron is the subatomic particle that carries a _____ charge
neutral
The Electron is the subatomic particle that carries a _____ charge
postitive
Most of the mass of an atom is found in the
electron
Most of the total volume of an atom is due to the
Atom X has 42 protons and 47 neutrons. Atom Y has 42 protons and 42 neutrons. Atom X and Y are _____ of the same element
isotopes
ions
Without the strong force, the protons would repel each other
The weak force is responsible for radioactive decay
The electromagnetic force acts as a force of attraction or repulsion
The gravitational force is most easily observed in the behavior of large objects, not smaller ones.
Who was credited with the first Atomic Theory
Dalton
Bohr
Chadwick
His philosophy was the smallest piece of matter is the atom
Aristotle
Democritus
Thompson
An atom is mostly empty space with a small, positive nucleus
Rutherford
He is credited with the discovery of electrons
Mr. Rabbit
He is credited with the discovery of he neutron
Candle Wick
Cheese Wick
In an atom, electrons are located in energy levels that are a certain distance from the nucleus
Boar
