Lesson 1.03 Flashcards
What is energy, and what is its unit of measure?
Energy is the ability to cause change or the ability to do work and is measured in the SI unit Joules. All forms of energy can be measured in a unit called Joule.
What is work?
Work is the process of causing matter to move against an opposing force.
List examples of potential energy with their descriptions.
Bungee jumping has potential energy before the fall. Gasoline, food, and chemical compounds.
Define kinetic energy.
Kinetic energy is energy an object has due to its motion.
List examples of kinetic energy with their descriptions.
A car rolling down the street, particles of air moving around inside a balloon, and a bungee jumper falling through the air are all examples of objects with kinetic energy.
What is the law of conservation of energy?
As energy changes from one form to another within these processes, more energy is not created, and none of the energy is destroyed; it simply changes form.
Give two examples of energy conversion.
When gasoline is converted, 70% is off put as heat. Therefore, its not lost just converted to another form of energy.
What is the difference between trying to conserve energy and the conservation of energy?
In truth, instead of “conserve energy,” we should probably say “prevent energy transformation, and store energy.” The term “conservation of energy” explains that as energy changes form, its total amount does not change.
When heat is transferred to molecules, they move _______, their kinetic energy ________, and the number of collisions between the molecules ________.
When heat is transferred to molecules, they move FASTER, their kinetic energy INCREASES and the number of collision between the molecules INCREASES.
What does temperature measure?
Temperature measures the average kinetic energy of a substance.
What are the freezing and boiling points of water in the three different temperature scales?
Freezing:
32 *F
0 *C
273.15 K
Boiling:
212 *F
100 *C
373.15 K
How do you convert between Celsius and Kelvin? Record some practice conversions.
You convert to Celsius by adding 273.15 and convert the units to Kelvin.
100 *C + 273.15 = 373.15 K
How does increased temperature affect the amount of salt, carbon, and other substances able to dissolve in the ocean? What are the resulting effects?
By adding heat, a substance can dissolve a lot easier since the molecules woudl be moving at a faster speed. Thus, allowing making
How does increased temperature affect the amount of salt, carbon, and other substances able to dissolve in the ocean? What are the resulting effects?
By adding heat, a substance can dissolve a lot easier since the molecules would be moving at a faster speed. Thus, allowing salt, carbon, and other substances to dissolve more easily into the ocean. Effects are increased acidity, which has terrible effects on the ecosystems.
