[Prelim] Physics Flashcards
Is an experimental science.
Physics
Observe the phenomena of nature and try to find patterns that relate to these phenomena.
Physicists
Scientific ideas starts as __________ and evidence may or may not support them.
Predictions
Physical Quantities:
Fundamental (or base) Quantities
Derived Quantities
Fundamental Quantities:
- Length
- Mass
- Time
- Temperature
- Electric Current
- Luminous Intensity
- Amount of Substance
Derived Quantities:
- Speed
- Density
- Force
Infromal Ststem of measurement:
- Handspan
- Cubit
- Armspan
- Face
- Foot Span
System of measurement:
- British (imperial) system or imperial system
- Metric or international System (SI)
British Imperial System:
- Length
- Volume
- Mass
- Time and Date
Measurement for the length and distance:
- Meterstick
- Trundle wheel
- Tape measure
- Vernier Caliper
Measurement for Mass:
- Electronic balance
- Double Pan Balance
- Triple Bean Balance
Measurement for Volume:
- Graduated Cylinder
- Volume of Solids
- Volume of irregular solids
Measurement for temperature:
- Thermometer
Measurement Error:
- Random Error
- Systematic Error
- proposed explanation that has been extensively tested and is based on many observations.
- an explanation of why something happens based on years of testing and obervations.
Theory
- a rule that describes how something in nature behaves, but not necessarily why it behaves that way.
- describes what happens under certain conditions.
Law
Require measurements, we generally use numbers to describe the results of measurements.
Experiments
Some physical quantities are so fundamental that we define them only by describing how to measure them.
Operational definition
- only three _____________ were considered; length, mass, time.
- with the developments of science, four more physical quantities were added.
Fundamental (or base) Quantities
The quantities that are derived from the fundamental quantities like speed, acceleration, density, force, and momentum.
Derived Quantities
Defined as distance covered over time.
Speed
Defined as mass per unit volume.
Density
Defined as mass acceleration.
Force
when we measure a quantity, we always compare it with some reference ________.
Standard
The _____ is a unit of distance, and the ______ is a unit of time.
- Meter
- Second
Are a collection of units of measurements and rules relating them to each other.
Measurements Systems
- the international system of units, or SI, is the preferred method of measurement in Physics.
- It has a base unit for every type of measurement.
Metric System or SI
SI stands for _________. French for _______
- Système Internationale
- International System
SI basic unit of Length (distance)
Meter (m)
SI basic unit of mass
Gram (g)
SI basic unit of weight (force)
Newton (N)
SI basic unit of volume (capacity)
Liter (L) or Cubic meter (m3)
SI basic unit of temperature
Kelvin (k)
SI basic unit of time
Seconds (s)