Mechanical Energy
What type of energy is stored in a stretched rubber band?
Potential Energy
What tool is used to measure heat?
Thermometer
What is an energy transformation?
A change from one type of energy to another
What is a hypothesis?
A statement that predicts the outcome of an investigation.
How many continents are there on Earth?
7
What type of energy does a moving bicycle have?
Kinetic Energy
Fill in the Blank
Conduction, ______ and radiaion are the forms of heat transfer.
Convection
What is energy efficiency? Bonus points if you can state the equation.
How much input energy is converted into useful output energy.
Efficiency= Output Energy / Input Energy
Why is it important to repeat an experiment several times?
Improve the reliability of the experiment. Make sure you get consistent results.
What is the longest river in the world?
The nile river
If a ball is held at the top of a hill, what energy does it have and why?
Potential energy because the ball has stored energy due to its high (gravitational potential energy)
In summer, heat cannot enter the house.
A light bulb is 20% efficient. What happens to the other 80% of the energy?
It is lost as wasted energy, mostly as heat.
Define ONE of the following terms.
Dependent Variable
Independent Variable
Dependent Variable (thing you change in an experiment)
Independent Variable (thing you measure in an experiment)
Who is the author of the original Spider-man comics?
Stan Lee
Where is a rollercoaster at its greatest speed? Explain your answer
A rollercoaster is at its greatest speed when it is at the bottom of a dip because all the gravitational potential energy has been converted to kinetic.
Give an example of the three forms of heat transfer. Conduction, convection and radiation.
Boiling water on a stove — conduction through the pot, convection in the water, radiation from the sun.
Other answers can be accepted.
What energy transformation happens in a hairdryer?
Electrical energy → heat energy + kinetic energy + sound
What is the difference between qualitative and quantitative observations?
Qualitative - Word descriptions
Quantitative - Numbered observations
What are the four most popular sports in the world?
Football/soccer
Cricket
Basketball
Hockey
What is the following definition describing?
A purposefully over-engineered contraption that performs a simple task in a very complicated, often humorous, way
Rube Goldberg Machine
Why do metals feel colder than wood at the same temperature?
Metals are better heat conductors than wood. They therefore draw out more heat from your body than wood would.
A television transforms electrical energy into several forms. Name at least two and identify which is useful and which is wasted.
Light and sound are useful; heat is wasted
What is the difference between a control group and controlled variables?
Control group - A set of data to compare your experimental data to.
Controlled variables - Things you keep the same in an experiment.
What do the 5 rings on the olympic flag represent?
The union of the major, participating continents (australia, america, asia, europe and africa)