Misc 1
Misc 2
Misc 3
Misc 4
Misc 5
100
Objects of different masses are suspended from a height. What 2 factors affect gravitational potential energy?
High mass and high height
100
Which are some renewable energy sources?
wind, solar, hydro, tidal
100
Is an incandescent light bulb more or less energy efficient than a fluorescent one?
What is less
100
What is the Law of Conservation of Energy
Energy can not be created or destroyed but it can change from one type to another.
100
What energy transformation takes place when a radio is plugged in and turned on?
Electrical to sound
200
Heat always travels from...
Warm to cool
200
A hot air balloon rising is an example of ...
convection
200
Thermal energy that is transferred from one substance to another.
What is heat
200
At what point does the biker have the greatest Potential Energy?
Point B
200
Name an example of a Thermal Insulator
Styrofoam, wood, plastic, wool
300
Give an example of a Thermal Conductor?
any metal
300
The efficiency of an average gasoline powered car is about 20%. This means...
A.The gas tank needs to be 20% filled with gasoline for motion.
B. The car uses 80% of the energy stored in the gasoline for motion.
C. The car uses 20% of the energy stored in the gasoline for motion.
D. The car wastes 20% of the energy stored in the gasoline.
What is C
300
At what point does the biker have the greatest Kinetic Energy?
Point D
300
Which Apple has the greatest Gravitational Potential Energy?
Apple B
300
What type of energy is transformed in the Energy Conversion shown in the image below?
Electrical Energy
400
Which will have the HIGHEST thermal energy?
A. Hot cup of tea
B. Cold bathtub water
C. Huge lake
D. Warm bowl of soup
C
400
When water passes through a dam, it flows downhill to turn a turbine connected to a generator, which produces electricity that travels through powerlines to our homes and businesses. Which statement best shows the order of energy transformations that occur in this scenario?
A. Kinetic --> Thermal --> Electrical
B. Potential --> Kinetic --> Electrical
C. Kinetic --> Potential --> Electrical
D. Electrical --> Kinetic --> Potential
What is B
400
Cory noticed that the hood of her car was hot after driving it for a while. What energy transformation was she noticing?
A. chemical energy à motion (kinetic) energy à thermal energy
B. chemical energy à thermal energy à motion (kinetic) energy
C. motion(kinetic) energy à potential energy à thermal energy
D. motion (kinetic) energy à thermal energy à chemical energ
What is A
400
When a car runs it converts gas into kinetic energy. What other forms of energy are present?
Sound and thermal
400
How can you ensure results are scientific?
repeat trials and have someone else replicate your experiment
500
If you put a hot cube in cold water what will happen?
The temperature of the water will increase, while the temperature of the metal cube will decrease until they reach the same temperature
500
What type of energy transformation occurs, when a hawk eats a mouse and then uses the energy from the mouse to fly?
chemical energy to mechanical energy
500
Which lightbulb should you chose to be most energy effieicent?
A. An incandescent light bulb because it is more energy efficient, giving off more light and less thermal energy than a fluorescent light bulb.
B. A fluorescent light bulb because it is more energy efficient, giving off more light and less thermal energy than an incandescent light bulb.
C. A fluorescent light bulb because it is more energy efficient, giving off more light and more thermal energy than an incandescent light bulb.
D. An incandescent light bulb because it is more energy efficient, giving off more light and more thermal energy than a fluorescent light bulb.
B
500
When a pendulum swings, at which point is kinetic energy highest?
3
500
Efficiency is...
A. The percentage of energy that is actually used to do work
B. The stuff in the walls that keeps energy in
A