Test - Unit 7 Energy Flashcards
- Give an example of thermal energy transfer by convection?
a kettle boiling on a stovetop
Notes U7C3 pg.19
- Green plants convert light energy from the sun into ____ during photosynthesis.
chemical potential energy
Notes U7C1 pg.3
- When oil is burned to produce electricity, the electrical energy produced is less than the potential energy in the oil. Which best explains this observation?
Some of the potential energy in oil is converted into forms of energy other than electricity.
Notes U7C1 pg.3
- Transfer of energy by the movement of heated particles.
Convection
Notes U7C3 pg.19
- The diagram to the right shows four locations in a temperature field. The temperature of each location is given in degrees Celsius. Heat energy will normally flow from:
High temp to low temp
Notes U7C1 pg.3
- An example of an energy conversion from kinetic to thermal energy would be
friction
Notes U7C2 pg.11
- Give two examples of thermal energy transfer by conduction?
(a pan on a stove and iron on an ironing board)
Notes U7C2 pg.10
- The ____ energy of an object increases with its height.
gravitational potential
Notes U7C1 pg.3
- When water at 10oC is heated to 20o C its kinetic energy
increases
Notes U7C3 pg.20
- The sum of kinetic energy and potential energy within a system is called
mechanical energy
Notes U7C2 pg.10
- The picture below shows a person swinging a baseball bat, starting at point A. The gravitational potential energy of the bat would be the greatest at
point A (highest point) Notes U7C2 pg.11
- Temperature measures the average ____ of the particles in a material.
kinetic energy
Notes U7C1 pg.2
- Energy Transformations: A piano would be an example of
Kinetic to Sound
Notes U7C2 pg.10
- The rate at which work is done is ____.
power
Notes U7C4 pg.27
- This roller coaster car starts from rest and moves along the track. At what point does the roller coaster car have the greatest potential energy?
highest point
Notes U7C2 pg.11
- The kinetic energy of an object increases as its ______ increases.
velocity
Notes U7C2 pg.10
- When an object is dropped what happens to potential and kinetic energy as it falls?
GPE goes down, KE goes up
Notes U7C4 pg.27
- Energy Transformations: A sling shot would be an example of
Elastic potential to Kinetic
Notes U7C1 pg.3
- As the time required to do a given amount of work decreases, the power developed
increases
Notes U7C4 pg.27
- What energy change do the appliances to these appliances all have in common?
They convert electrical energy to thermal energy
Notes U7C2 pg.10
- Through what phases of matter will convection most likely occur?
liquids and gases
Notes U7C1 pg.3
