Show:
Forms of Energy
Scientific Method
Potential and Kinetic Energy
Work and Power
Thermal Energy
100
This is the energy stored in the nucleus of an atom
What is nuclear energy?
100
This is the variable the experimenter is manipulating or changing in the experiment
What is the independent variable?
100
This is energy stored as a result of shape or position of an object
What is potential energy?
100
This is the definition of work
What is work is done when a force that is applied to an object moves that object in the same direction the force is applied?
100
This is heat transfer by waves traveling through space
What is radiation?
200
The sun primarily provides this form of energy
What is electromagnetic energy?
200
This is the definition of a control group
What is the group that is a standard by which any change can be measured?
200
This is the two main types of potential energy
What is elastic and gravitational?
200
This is the SI unit for work and the SI unit for power
What is work is measured in Joules and power is measured in Watts?
200
This is the difference between heat and temperature
What is heat is a transfer of thermal energy and temperature is the average kinetic energy of particles in an object?
300
This is the total potential and kinetic energy of all microscopic particles in an object
What is thermal energy?
300
This is an example of thermal expansion in your every day lives
What is the balloon expanding in the heat, bottles full of liquids exploding, or gaps in the sidewalk?
300
This is an example of an object that gradually converts from gravitational potential energy to kinetic energy
What is a pendulum, a roller coaster, or a ball thrown in the air?
300
This is how you can increase the rate of work done on an object (2 possible answers)
What is Do the same amount of work in a shorter period of time Do more work in the same period of time
300
These are three factors which affect the thermal energy of an object
What is its mass, its temperature, and its phase of matter?
400
This is the law of conservation of energy
What is energy can neither be created nor destroyed in a chemical reaction?
400
Quinn wants to see how height affects the gravitational potential energy of an object. He drops one tennis ball from 10 m in the air, one tennis ball at 15 m in the air, and one tennis ball at 20 m in the air. Then he measures the GPE. What is independent variable in this experiment?
The height at which the ball was dropped
400
This is the formula for potential energy (you must write out each word- not just the letter of the variable)
What is mass x acceleration due to gravity x height?
400
A force of 10 N is applied perpendicularly to a ball as it is displaced 5 m. This is the work done on the ball.
What is no work! The force must be parallel to the movement of the object.
400
This is the difference between a conductor and an insulator
What is conductors are materials which readily allow the flow of thermal energy and insulators are materials which slow the transfer of thermal energy?
500
Describe the energy conversions that occurs in a toaster oven
What is electrical to thermal?
500
Aaron is a track coach. He wanted to see who his fastest runners are. He lines up 3 of his star athletes at the starting line. Each athlete runs 10 m. He records their times using a stopwatch. What is the dependent variable in this experiment?
What is the time each athlete took to run 10 m?
500
This is the kinetic energy of a ball that weighs .5 g and is thrown at 10 m/s?
What is 25 J?
500
A weightlifter lifts a 100 N barbell 5 m above his head in 10 seconds. What is the POWER done on the barbell?
What is 50 W? (100 x 5= 500/10= 50)
500
This is the difference between convection and conduction
What is in conduction particles collide and transfer kinetic energy while convection is mainly movement of particles (circulation) through a fluid?