UNIT 1: ENERGY
What are the two basic categories of energy?
Kinetic and Potential
The motion of its atoms.
How many significant figures are in 1,200?
Two.
When going from scientific notation to standard notation, if the scientific notation has a NEGATIVE exponent will the standard notation be a decimal or whole number?
Decimal
How tall is Mrs. Corsello's husband?
6'7"
List at least 6 of the 9 major types of energy we covered. (HINT: There are 5 kinetic and 4 potential).
KINETIC: Motion, Thermal, Radiant, Sound, Electrical
POTENTIAL: Gravitational, Elastic, Nuclear, Chemical
Which state of matter has the fastest atomic movement?
Gas
Round 0.00345 to two significant figures.
0.0035
Change 1,230,000 into Scientific Notation
1.23 x 10^6
Name one of Mrs. Corsello's hobbies?
[Answers vary]
You are running late for school because the bus broke down. The bus driver is trying to start the bus using jumper cables.
List two types of energy that are involved in this scenario.
Electrical, Motion (movement of the bus, moving the cables, etc.), Chemical (battery), etc.
You leave your iced coffee on your school desk and it begins to melt. What is happening to the ice at the atomic level?
The atoms in the ice are beginning to move faster and spread farther apart.
Round 0.002001 to two significant figures.
0.0020
Change 0.00765 into Scientific Notation
7.65 x 10^-3
Name one animal besides dog/hamster that Mrs. Corsello has owned.
Cats, horse, hedgehog
You eat a protein bar then go to the gym to work out.
List three types of energy involved in this scenario, including AT LEAST one potential and one kinetic energy.
Food: Chemical Energy
Exercise: Motion, Thermal, Sound (if you listen to music), etc.
You are boiling water on the stove to make pasta and your glasses begin to fog up. Name the type of state change (ex. melting, freezing, etc.) and explain what is happening to the water molecules at the atomic level.
The water is evaporating into steam. The water molecules are moving faster and faster and spreading out as the liquid turns to gas.
Round 0.00000004 to three significant figures.
0.00000004
Change 3.02x10^-6 into standard notation.
0.00000302
Poptart
Describe the relationship between gravitational potential energy and kinetic energy in a swinging pendulum.
GPE is built as the pendulum rises in its swing, and KE is reduced since the pendulum is slowing down to a brief stop.
KE rises as the pendulum falls and GPE is reduced as the weight gets lower.
GPE is highest when KE is 0. GPE is 0 when KE is highest.
You are doing an experiment with dry ice in chemistry class. The dry ice is releasing steam WITHOUT melting into water first. Name the type of state change and explain what is happening at the atomic level.
The ice is sublimating. The atoms were vibrating in place and then rapidly begin moving faster and spreading out. This happens quickly enough that the ice does not pass through the liquid stage.
Round 1.506 x 10^3 to two significant figures.
1.5 x 10^3
Change 3.4756x10^3 into standard notation THEN round to 3 significant figures.
3470
What is the mannequin's name?
Bianca