Nature of Science
Define hypothesis.
An educated guess or prediction of what will happen (or what the answer is) in an experiment.
In what direction does heat move (warm to cold or cold to warm)?
warm to cold
Energy cannot be created or destroyed, only changed in form.
What is an Electromagnetic wave?
a wave that can moves by magnetic and electric forces and can go through a vaccuum (or matter)
Waves are any disturbance that transmit energy. What are the 2 types of waves in terms of needing a medium?
mechanical waves need a medium
EM waves do not need a medium and can travel through a vaccuum
What are the two types of variables in an experiment AND which one is the manipulated (or tested) variable?
Dependent and Independent.
Independent Variable is manipulated.
What happens to the kinetic energy of particles in an object as it gets warmer and its temperature rises?
KE increases; particles move faster
Name two types/forms of energy that can be classified as potential.
Chemical
Nuclear
ROY G BIV
Which type of wave does the medium (or particles) move perpendicular to the wave?
transverse waves
What is the difference between observation and inference?
Observation is information gained by direct observation and/or measurement, while inference is what you think is happening based on what you may already know.
Explain how room temperature soda in a cooler of ice gets cold (in terms of heat and thermal energy).
The heat energy from the soda moves into the colder ice, thus making the soda colder.
Name the 2 forms of energy in this example of an energy transformation. (don't include the person pushing the button)
turning on a flashlight
Chemical to electrical to light
Name one use for infrared waves.
Night goggles, night sight
Explain the difference between longitudinal and transverse waves.
Transverse waves- particles move perpendicular to the direction of the wave
Longitudinal waves- particles and wave move the same direction or parallel