Scientific Experimentation
How should you organize data as it is being collected in a scientific experiment?
A data table
Which state of matter has a definite shape and volume?
Solid
What type of energy does a moving car have?
Kinetic Energy
What is the force between two surfaces that resists motion?
Friction
What is the distance between crests of a wave?
Wavelength
What is the purpose of using filter paper in an experiment?
To separate solids from a liquid.
Which property of matter explains why objects can float or sink?
Density
In order for work to be done on an object, the _____ applied to it needs to be in the same direction as the ______ that occurs.
force ; motion
Gravity is a(an) ________ force? (attractive or repulsive)
attractive
What happens to light waves as they move from air into water?
refraction (bending)
What is the variable that is changed or manipulated by the experimenter?
Independent Variable
What is the difference between an element and a compound?
An element is only one type of atom, and a compound is two or more types of atoms put together to form a different substance.
What happens to the potential energy as a car rolls down a hill?
The potential energy is converted into kinetic energy, which causes the car to move faster.
What property makes it more difficult to move larger objects?
Interia
What is an echo?
A reflection of sound waves
Whether electricity was conducted or not.
What are the 5 pieces of evidence that a chemical reaction took place?
Color change, temperature change, solid/precipitate forms, odor, gas bubbles
Energy cannot be created or destroyed, only _____ from one form to another.
transferred
How does Newton's Third Law apply to a rocket launch?
The force of the gas being expelled downward, causes the rocket to move upwards with an equal and opposite force.
The taller the amplitude of a wave, the more ______ it has.
energy
What are the conditions that have to remain the same during an experiment to ensure accuracy and reliability of results?
The controls/constants.
What is the law of conservation of mass in a chemical reaction?
Every atom present in the reactants is also present in the products.
In an electrical current, what causes current to flow?
What do magnetic fields and electric fields have in common?
Opposite poles/charges attract eachother
decreases