Kinetic & Potential
Energy that is stored:
Example: book laying on a shelf
What is Potential Energy?
Give an example of conduction, convection, & radiation
answers will vary
which object will heat up the quickest and WHY: metal can, glass cup, or styrofoam cup?
Metal can because metal is a conductor of heat
what is a cell?
basic living structural unit of an organism
What type of energy transfer occurs when a mug of hot tea warms cold hands?
conduction
Energy in motion
example: ball rolling down a hill
What is kinetic energy?
What is conduction, convection, and radiation
Conduction: thermal transfer when 2 things touch
convection: thermal transfer through rising and falling of fluids
radiation: thermal transfer through waves
what is temperature?
average kinetic energy of particles in any matter
what is a renewable resource?
a resource that can be replenished (remade) in a relatively short amount of time
what is a nonrenewable resource
a resource that cannot me remade in a short time, when it is used up it will be gone
The amount of matter in an object.
What is mass?
Define conductor & insulator
conductor: allow heat to flow
insulator: block/slows down heat energy from flowing
The temperature of the surrounding ________ can affect the transfer of energy.
environment
When mass decrease, kinetic energy _____
Decreases
what organelles are only located within a plant cell?
chloroplast and cell wall
Explain the proportional relationship between an object’s kinetic energy and the speed of the object.
What is speed and kinetic energy have a directly proportional relationship?
This means when speed increases so does kinetic energy.
Students take three samples of three different liquids, all at the same temperature, and place the samples into three identical beakers. They place all three beakers onto the same hot plate. What will happen to the temperature of the 3 liquids?
How is the temperature of a substance related to kinetic energy?
The temperature of a substance is proportional to the average kinetic energy of the substance’s molecules.
The ability of a system to do work; it is required for changes to happen within a system
energy
Which two body systems are responsible for blood circulation?
The circulatory system AND respiratory system
Imagine a bird is diving into the ocean to eat a fish. At which point is the bird’s kinetic energy the greatest?
The bird will have the greatest kinetic energy at the moment of impact with the water. That is when all of its potential energy (due to the height above the water) will have been converted to kinetic energy.
If two objects have different temperatures, in which direction will heat move? For how long?
Heat energy always flows from the object with the higher temperature to the one with lower temperature. The heat energy will flow until they are at the same temperature.
Describe the transfer of energy that occurs as water freezes.
As water cools, energy is removed from the system and the molecules begin to slow down. When the molecules have slowed down sufficiently, they begin to bond together and form ice.
Describe an instance when the motion energy of an object changed, causing some other energy change as well.
When a driver slams on the brakes to make a quick stop, some of the motion energy is changed to thermal energy and sound energy.
Any other example works too
Energy transfer occurs when two objects are at a different ________.
Temperature