Science 1st Semester Exam Flashcards
Medium
Any substance that a wave moves through
Mechanical waves
Waves that transfer energy through matter
Transverse waves
A wave that travels at right angles or perpendicular to the disturbance
Longitudinal waves
A wave that travels in the same direction as the disturbance
Crest
The highest point or peak of a wave
Trough
The lowest point or valley of a wave
Wavelength
The distance from one wave crest or trough to the next
Frequency
The number of waves passing a fixed point in a certain amount of time
Reflection
The bouncing back of a wave after it strikes a barrier
Refraction
The bending of a wave as it enters a new medium at an angle other than 90degrees
Diffraction
The spreading out of waves through an openings or around the edge of an obstacle
Electromagnetic spectrum
Range of all EM frequencies
Radio waves
EM waves with the longest wavelengths, lowest frequencies, and lowest energies.
Visible light
Part of the EM spectrum human eyes can see.
Wave
A disturbance that transfers energy from one place to another
Transmission
The passage of an EM wave through a medium
Absorptions
The disappearance of an EM wave through a medium
Observation
An act of noting and recording an event, characteristic, behavior, or anything else detected
Hypothesis
A tentative answer to a if……then statement
Experiment
An organized procedure to study something under controlled conditions
Investigation
The process of collecting evidence
Conclusion
The end results of the experiment
Problem
A scientific problem that needs to be further experimented
Solution
The conclusion to the scientific problem
