Physics Unit Exam Wednesday, April 27th
Physics Review Questions Part B
Why do we care about significant
digits in science?
What are some rules for
determining the number of significant digits in a measurement?
What are some rules for
determining the number of significant digits in a calculated answer? (+/- vs x/÷)
What is the difference
between a scalar and a vector quantity? Provide some examples
What does the slope of line
in a distance time graph tell you?
What does the slope of line in
a position time graph tell you?
What does the slope of a line
in a speed time and graph tell you?
What does the slope of a line
in a velocity time graph tell you?
What does the area under a
line of best fit on a speed time graph tell you?
What are the units and symbols
for speed and velocity?
What are the units and
symbols for distance and displacement?
What are the units and symbol
for acceleration?
What is the difference between
positive and negative acceleration?
Is gravity a push or a pull?
Is friction a push or a pull?
Can you convert these units?
How many cm's are in a m?
How many m's are in a km?
How many seconds are in a min?
How many min are in a hour?
How many seconds are in an hour?
How many grams are in a kilogram?
A pendulum at position 1 is
released and swings to position 5, as shown in the diagram above.
-
Describe the energy transformations:
From 1 - 3
From 3-5
Identify
the position(s) where the pendulum has
i.
maximum speed ___
ii. minimum speed ___
iii.
maximum gravitational potential energy ___
iv.
minimum potential energy ___
v.
maximum kinetic energy ___
vi.
minimum kinetic energy ___
vii.
maximum mechanical energy ___
How did the work of these
individuals contribute to our understanding of energy today (in your text book)?
·
Antoine Lavoisier
·
Alessandro Volta
·
Hans Oerstead
·
Henri Becquerel
·
Thomas Seebeck
·
James Joule
·
Joseph Black
Define the Following Terms /
Provide the correct units of measurement
·
Kinetic Energy
·
Work
·
Force
·
Gravitational
Potential Energy
·
Elastic Potential
Energy
·
Chemical
Potential Energy
·
Mechanical Energy
·
Law of
Conservation of Energy
·
Thermodynamics (1st
and 2nd laws)
·
Nuclear Energy
·
Solar Energy
·
Heat
·
Open system
·
Closed system
·
Isolated system
·
Heat engine
·
Heat pump
How is kinetic energy related
to the mass of an object?
How is kinetic energy related
to the speed of an object?
What are the fundamental
units of a Joule? a Newton?
How is energy converted in
Natural systems?
How are the following
evidence for energy conversions or transfers
1. Motion
2. Change in Position
3. Change in Shape
4. Temperature
How do each of the following
Technological Systems convert energy?
·
Hydroelectric
Dams
·
Coal Burning
power stations
·
Nuclear Power
Plants
·
Solar cells
·
Fuel cells
The development of Engine
Technology( Pages 206-214)
How did each of these
technologies/individuals contribute to our current internal combustion engine?
What were some drawbacks of these technologies?
·
The Gunpowder
engine
·
The Heat Engine
·
The Savery Engine
·
The Newcomen
Engine
·
The Watt Engine
·
The first
Internal Combustion Engines (Otto and Langen)
·
The Daimler
Internal Combustion engine
What is a perfect machine or
a Perpetual Motion Machine? Are they possible? Why or why not?
Define these terms:
·
Efficiency
·
Work Input
·
Work Output
How do you determine the
efficiency of a machine/system?
What are some Solar Energy
sources we utilize today?
What are some non-solar
energy sources we utilize today?
How does a hydroelectric dam work?
How does a coal burning power station work?
How does a Nuclear Power plant work?
How does a solar cell work?
What is the difference
between renewable energy sources and non-renewable energy sources?
What is meant by the phrase "energy crisis"?
How can cogeneration
encourage companies to become more efficient?
What is meant by the term
sustainable, as it pertains to energy consumption presently and the potential energy
needs of the future?
