Vocabulary
What's a joule?
What is unit of energy
The more ______, the more potential energy.
Height/altitude/distance from ground
What is kinetic energy?
The energy of movement.
A position where it established that an object has no potential energy
On the ground
What is thermal energy?
energy of heat
A roller coaster is at the top of the track. What kind of energy does it have?
Gravitational Potential (just Potential is valid)
The type of energy found in car batteries.
What is chemical potential
Which of these has the most kinetic energy?
A. a 25kg fish tank sitting on a table
B. a 50g fish swimming in a fish tank
C. a 7,500kg car parked on a steep hill.
D. a boulder sitting on top of a cliff.
B. a 50g fish swimming in a fish tank
The kinetic energy of a ball at the bottom of a hill equals________.
What is potential energy at the top?
What kind of energy is a battery?
chemical potential energy
A ball is rolling down a hill. What kind of energy does it have?
What is kinetic
We know mass is 1:1 to kinetic energy. What is speed to kinetic energy?
exponential
Which change would increase the kinetic energy of a moving object the most?
A. reducing the mass by half
B. reducing the speed by half
C. doubling the mass of the object
D. doubling the speed of the object
D. doubling the speed of the object
What is the best nickelodeon show
Spongebob.
The only answer.
What kind of energy does a diver have standing on a diving board?
gravitational potential energy
What is the type of potential energy determined by the amount of work gravity could do?
What is gravitational potential energy
Daily Double!!! Math!!!!- 3 min. You are allowed a calculator and a conversion sheet
A car 5000lb car sits at the top of a hill that is 1200ft above sea level. How much potential energy does it have?
HINT:
1 pound (lb) = 0.45359237 kilograms (kg)
1 foot (ft) = 0.3048 meters (m)
8.13x10^-6 OR 8,129,528.064 J
Which of these statements is an example of energy transfer?
A. an open flame heating a pan of water
B. a plant using sunlight to create glucose
C. turning on a flashlight to create a beam of light.
D. a person rubbing their hands together to warm them.
A. an open flame heating a pan of water
A truck drives to a rock quarry at a speed of 20m/s. The truck takes on a load of rocks, which DOUBLES its mass. It leaves at the same speed of 20m/s. Compare the kinetic energy of the truck as it left the quarry to when it arrived at the quarry.
The kinetic energy doubled as the truck left the quarry.
Name the units that we use when solving for FORCE and ENERGY. 2 Answers
F= NEWTON
E=Joule
How is mechanical energy calculated?
By adding potential and kinetic energy.
A person walking up the hill is transforming what kind of energy to what kind of energy?
kinetic energy to gravitational potential energy
Daily Double! MATH!! 3min to solve and can use a calculator and sheet of paper.
A ball is rolling down a ramp that is 1.5m long and it takes it 3.56 seconds to get to the bottom. The ball has a mass of 2kg. What is the KE of the ball at the bottom of the ramp?
0.178 J
The same loaded truck approaches and starts to go up a hill. Its speed slows to 10m/s. Compare the kinetic energy of the truck before and after it started to climb the hill.
The truck's kinetic energy exponentially decreased.
What is the law of the conservation of energy
Energy cannot be created or destroyed, only transferred from one form to another.