Show:
Equations
Experiments
Engineering
Energies
Energy Transformations
100
What energy is given off by this reaction: CuSO4 + Fe --> FeSO4 + Cu
thermal energy [heat]
100
What is the part of an experiment that we change on purpose?
variable (independent variable)
100
What is the first step in the Engineering Process?
Identify and research a need.
100
Name two kinetic energies
Any two of these: mechanical, nuclear, electricity, sound, light, radio waves, gamma radiation, etc.
100
What was the energy transformation for our chemical experiment?
Chemical energy --> Thermal energy produces
200
What is the right side of a chemical equation called?
the products
200
What did Galileo compare when he experimented from the Leaning Tower of Pisa?
falling objects (objects shape; objects masses)
200
What was the need that you identified in your toy car experiment? [How did you think your toy car would be special?]
Possible answers are: It would be fastest, go furthest, be sturdiest, do tricks, etc.
200
Name 3 potential energies.
gravity, chemical energy, elastic energy
200
What is the energy transformation that occurs when your spool toy runs?
Elastic energy --> Mechanical energy
300
How many atoms are in the reactants of the equation on the board? [The same number is in the product.]
7
300
What did Galileo conclude from his experiments from the Leaning Tower of Pisa?
Mass does not affect the speed of a falling object; Shape affects the speed of a falling object.
300
What is the second step in the Engineering Process? What is this like in the Scientific Method?
Develop Solutions; this is like a hypothesis
300
What type of energy makes meteors fall to Earth?
gravitational potential energy [gravity]
300
What is the energy transformation that occurs when you wind your spool toy?
Mechanical energy --> Elastic energy
400
What is happening in the chemical reaction described by this equation? 2H2 + O2 --> 2H2O
burning of hydrogen [combustion of hydrogen gas]
400
In our chemical experiment, what was the variable?
the amount of steel wool (Fe) used
400
How many electrons are in Copper? [Look at the Periodic table.]
29
400
What type of energy is stored in a car's gasoline?
chemical potential energy
400
What is the energy transformation for the classroom clock?
Electricity --> Mechanical energy
500
!!!DAILY DOUBLE!!! What will happen when the balloon of helium is lit? [3:55]
It will pop (like a regular balloon) and put the light out.
500
What happened to the steel wool that was put into Copper Sulfate? [Remember, matter is neither created nor destroyed, but only transformed.]
It went into the Copper Sulfate solution, producing Iron Sulfate (FeSO4)
500
What step in the Engineering Process is like Experimenting?
Step 4 Test and evaluate. OR Step 5 Improve: Modify and retest.
500
What kind of energy in stored inside a compressed spring?
elastic potential energy
500
What is the energy transformation for a human being who has just eaten breakfast?
chemical energy --> thermal energy [+ mechanical energy]