Show:
Types of Energy
When Things Collide
Transformations!
Experiments
Bonus Questions
100
Name all five forms of energy.
1: Heat/thermal 2: Kinetic/motion/mechanical 3: Light/solar/radiant 4: Electrical 5: Sound
100
When two objects collide, is it an example of an energy TRANSFER or an energy TRANSFORMATION?
Energy transfer. Energy is being transferred from one object to another.
100
Give an example of a kind of energy transfer you see at school.
There are many possible answers!
100
Describe THREE of our experiments we've done so far.
1: Erosion models with salt and straws 2: Changes in speed because of different ramp angles 3: How different speeds affect energy transferred during a collision 4: Great Marble Competition 5: Transforming energy in different stations
100
Where are Aaron and Alex going to school, and what are they studying?
Aaron is going to Williams and studying Biology (and Literature!). Alex is going to MCLA and studying Computer Science.
200
You wake up because the sun is out. What kind of energy is being produced by the sun?
Light energy OR Heat energy
200
Pick one: The higher a marble starts off on the ramp, the (FASTER or SLOWER) it goes.
Faster
200
What object converts electric energy to light energy?
Flashlights, light bulbs, lamps, etc.
200
What measuring tool did we use to measure the speed of the marble?
A stopwatch!
200
When something is moving, is it using Kinetic or Potential energy?
Kinetic energy. Potential energy is stored energy. Kinetic energy is the energy any object uses to do something. It is the energy in motion.
300
You notice Rafael riding a bike. What kind of energy is he using?
Kinetic Energy
300
Pick One: The faster a marble is, the (MORE or LESS) energy it has to transfer to the second marble.
More
300
Give an example of how YOU can produce heat energy.
Shivering, rubbing your hands, or doing exercise.
300
How did we calculate speed? In other words, what's the formula for speed?
Distance divided by time. Distance can be in inches, feet, yards, miles, etc. Time can be in seconds, minutes, hours, days, weeks, etc. Think of a car going 10 miles per hour. That's a speed!!
300
If you use a bigger marble to roll down the ramp, do you think the second marble will move farther or just the same if you used marbles with equal sizes?
You expect that the marble will move farther! The bigger marble has more kinetic energy because it's heavier, so when it transfers all that energy to the second marble, the second marble will move faster and go farther. Think of this way: Which would likely have more power if you threw it: a marble or a bowling ball?
400
What type of energy do you need first to start a toaster?
Electrical Energy
400
Pick one: The more energy transferred to the second marble, the (FASTER or SLOWER) the second marble will go.
Faster
400
Does energy get destroyed or created when it's being used?
No! Energy is never created or destroyed. Just transferred or transformed.
400
Which is NOT a reason why we used marbles? (a) They are lightweight (b) they are not bouncy (c) they are spherical/round (d) they are small
(b) they are bouncy. It doesn't matter whether or not they were bouncy, but the other things mattered.
400
DOUBLE JEOPARDY: Before scientists do any experiment, they have to make predictions. What do you call a scientific statement that is also known as an "educated guess?"
An hypothesis!
500
True or False: There are only five types of energy.
False! There's also nuclear, chemical, electromagnetic, and gravitational. Remember: Potential energy is not a form of energy.
500
Pick one: If the second marble is slow, the second marble will go (FAR or NOT VERY FAR)
Not very far
500
Give an example of an energy transfer that goes from Electric to Kinetic.
Anything that uses batteries that moves.
500
What would make the second object go farther: a ramp at (a) 20 degrees, (b) 45 degrees, (c) 75 degrees, (d) 100 degrees. Remember your protractors!
(c) 75 degrees. It is more than (a) or (b). It's also a trick question because 100 degrees is too much for a marble to roll down on.
500
Here's the result of an experiment in a bar graph. How would you interpret this?
[See bar graph]