Ch.1
What is Energy?
The ability to do work or cause change.
What is work?
a force moving an object that causes that object to move in the direction of the force.
The definition of science:
The study of the natural world
Energy cannot be ________ or ______________.
created or destroyed
Independent Variables are...
The part of the experiment that is being changed or manipulated to see if it has an effect.
What are the four types of energy from this chapter?
thermal, electrical, mechanical, radiant
Energy can be transformed or __________.
converted into one form or another.
Who Am I?: Energy an object has due to its motion and position,
Mechanical Energy
Dependent Variables are...
The part of the experiment that you measure. It changes based on the effect of the Independent variable.
Observations are....
Information obtained through the senses.
Who Am I?: energy of heat through CONTACT
Thermal Energy
Who Am I?: energy that travels in waves, like sunlight, microwaves, or X-rays.
Radiant Energy
Who am I examples of?:
a hammer
a windmill
a bicycle
a bow/arrow
mechanical energy
Mr. Krabbs wants to make Bikini Bottom a nicer place to live. He has created a new sauce that he thinks will reduce the production of body gas associated with eating crabby patties from the Krusty Krab. He recruits 100 customers with a history of gas problems. He has 50 of them (Group A) eat crabby patties with the new sauce. The other 50 (Group B) eat crabby patties with sauce that looks just like new sauce but is really just mixture of mayonnaise and food coloring. Both groups were told that they were getting the sauce that would reduce gas production.
Constant is....
Independent Varable is.....
Dependent Variable is......
Constant: feeding the volunteers
IV: Different sauces
DV: Gas production
Constants are...
Conditions that stay the same in the experiment
Who Am I?: Energy associated with flowing electrons.
Electrical Energy
Definition of Electrical Energy
Energy associated with flowing electrons, like static electricity or current electricity.
Who am I examples of?:
heat from a fire
an iron
a stove/oven
a toaster
hoding a cup of hot chocolate
thermal energy
Sponge Bob notices that his pal Gary is suffering from slimotosis, which occurs when the shell develops a nasty slime and gives off a horrible odor. His friend Patrick tells him that rubbing seaweed on the shell is the perfect cure, while Sandy says that drinking Dr. Kelp will be a better cure. Sponge Bob decides to test this cure by rubbing Gary with seaweed for 1 week and having him drink Dr. Kelp. After a week of treatment, the slime is gone and Gary’s shell smells better.
Constant is....
Independent Varable is.....
Dependent Variable is......
Constant: treating/caring for Gary
IV: types of treatments
DV: Smell of the shell.
An inference is...
A conclusion reached on the basis of evidence and reasoning.
Definition of Mechanical Energy
Energy an object has due to its motion and position, like wind pwoer or sound.
Definition of Thermal Energy
energy of heat through CONTACT, like a hot grill or stove.
Definition of Radiant Energy
energy that travels in waves, like sunlight, microwaves, or X-rays.
What type of energy conversion is envoled?
Toaster
Treadmill
Electric to Thermal
Electric to Mechanical
Evidence is...
Information collected during a scientific investigation.