Questão 1
Questão
Prior to an experiment scientists make a(an) __________ which is an educated guess about the solution to a problem.
Responda
-
hypothesis
-
data
-
scientific theory
Questão 2
Questão
A well tested idea that explains and connects observations, hypotheses and events in nature is a scientific __________
Questão 3
Questão
Observations and measurements recorded during an experiment are considered
Responda
-
Dependent variable
-
data
-
control variable
Questão 4
Questão
The factor that is expected to change in an experiment is called a(an)
Responda
-
independent variable
-
dependent variale
-
control variable
Questão 5
Questão
The scientist changes the __________ __________ on purpose during the experiment
Responda
-
independent variable
-
control variable
-
dependent variable
Questão 6
Questão
A logical conclusion based on observations, prior knowledge and data is a(an)
Questão 7
Questão
A __________ is a statement that describes what scientists expect to happen every time under a certain set of conditions
Responda
-
control variable
-
theory
-
scientific law
Questão 8
Questão
When information is gathered through use of your five senses, you are making a(an)
Responda
-
inference
-
observation
-
hypothesis
Questão 9
Questão
Which of the following is the correct order of the scientific method steps?
Responda
-
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
Questão 10
Questão
The central core of the atom is called its
Questão 11
Questão
The Proton is the subatomic particle that carries a _____ charge
Questão 12
Questão
The Neutron is the subatomic particle that carries a _____ charge
Questão 13
Questão
The Electron is the subatomic particle that carries a _____ charge
Questão 14
Questão
Most of the mass of an atom is found in the
Responda
-
electron cloud
-
nucleus
-
electron
Questão 15
Questão
Most of the total volume of an atom is due to the
Responda
-
electron cloud
-
electron
-
nucleus
Questão 16
Questão
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
Questão 17
Questão
Without the strong force, the protons would repel each other
Questão 18
Questão
The weak force is responsible for radioactive decay
Questão 19
Questão
The electromagnetic force acts as a force of attraction or repulsion
Questão 20
Questão
The gravitational force is most easily observed in the behavior of large objects, not smaller ones.
Questão 21
Questão
Who was credited with the first Atomic Theory
Questão 22
Questão
His philosophy was the smallest piece of matter is the atom
Responda
-
Aristotle
-
Democritus
-
Thompson
Questão 23
Questão
An atom is mostly empty space with a small, positive nucleus
Responda
-
Rutherford
-
Chadwick
-
Thompson
Questão 24
Questão
He is credited with the discovery of electrons
Questão 25
Questão
He is credited with the discovery of he neutron
Responda
-
Chadwick
-
Candle Wick
-
Cheese Wick
Questão 26
Questão
In an atom, electrons are located in energy levels that are a certain distance from the nucleus