Chapters 1-5 Flashcards
What does science depend on?
Material evidence
What is physics?
It is the study of matter and energy
What is technology
It is an application of science
The scientific method
Observe, hypnotize, predict, test, modify, simplify
Two main components of the scientific method
Theory and observation
A good scientific theory
Develops step by step, is objective, can be tested or disproven, can be modified when new information is found, uses and builds upon existing knowledge.
Secrects of the physics
Science is testable and falsifiable
What system does the scientific system use?
Metric system
Tools of the trade
Telescopes
Spacecraft
Cameras
Computers
What is light?
Light is a form of energy that behaves both as a wave and a particle.
What travels faster than the speed of sound
Light
What is one light-year?
It is the distance light can travel in one year.
1ly
9.461*10e12
The electromagnetic spectrum
- Visible light is only one color of light.
- Light is energy transported as a wave.
Electromagnetic radiation
Light is energy transported as a wave.
What determines the amount of energy carried by a light wave?
Frequency
Science vs pseudoscience
- Science opens itself up to being disproved while pseudoscience doesn’t.
- Science uses well-established facts and theories to make new observations. Pseudosciences rarely have revolutionary new developments.
e=hf
energy= planck’s constant x frequency
h= 6.626 x 10e-34
Why are we interested in learning light?
It gives us information from great distances at high speed.
As frequency increases
Energy increases
As frequency increases
Wavelength decreases
What is light made of?
Waves, particles, energy.
Parts of velocity
The magnitude (size, or amount)
The direction (way which the velocity is pointed)
Velocity
Change in distance over the change in time v=d/t
