Types of Energy
What is an independent variable?
What is the variable that is changed in the experiment?
Why does a bouncy ball eventually stop?
The energy was transferred to other types of energy
Does scientific knowledge ever change?
What is Yes, when new discoveries are made and if the previous conclusions are no longer supported.
Dr. Smith has 5 students eat breakfast and 5 students refuse breakfast to determine which group is tired after 30 minutes of walking. What is the independent variable?
What is if the student has breakfast?
What is the dependent variable in an experiment?
What is the Outcome variable or the variable being measured?
A ceiling fan spinning
Electrical-> Mechanical
What is the group in the experiment that receives no treatment called?
What is Control group?
Pedro places two plants in different levels of sunlight and watches them for 4 weeks. Each plant receives the same amount of water. He checks their growth at 4 weeks to determine any changes. How can he improve this experiment?
What is doing more trials of the experiment?
Ms. Strassel wants to see if she changes the amount of water she gives a plant, if the plants height will be affected. What is the independent variable?
What is the amount of water?
When you use the toaster to cook toast what is the energy transformation taking place?
What is Electrical-> Mechanical/ Heat/ Light
This term is an explanation of a natural phenomenon that is supported by evidence and can be tested and refined.
What is Scientific theory?
What is a hypothesis?
What is an educated guess based off prior knowledge and research?
The scientist wants to see if the amount of sleep a person gets will change their science score. What is the Dependent variable?
What is the science score?
When you turn on a battery powered flashlight what is the energy transformation that takes place?
What is chemical-> Electrical-> Light/Heat
What is the difference between repetition and replication?
What is Repetition is when I do the experiment over and over while Replication is where someone else does my experiment.
Caroline watches a caterpillar walk across the sidewalk. She wants to determine how far the caterpillar travels in 1 minute, 3 minutes, and five minutes using a ruler from where it started and a timer to record the distances at each time. What is the Independent and Dependent variable?
What is the time (IV) and how far the caterpillar walks (DV)
When you drop a tennis ball, it hits the floor and bounces back up. But, it does not reach the same height as before and each time bounce is smaller than the previous one. However, you notice the tennis ball is slightly warmer after it finishes bouncing. Explain how the law of conservation of energy is obeyed.
What is During each bounce, some of the kinetic energy of the ball in transfered into thermal energy. As a result, energy is not created or destroyed, but only changes form so that the law of conservation of energy is obeyed.
This term is a statement that describes a natural phenomenon that is always true under certain conditions.
What is Scientific Law
Name Each type of energy.
Kinetic, Potential, Light, Heat, Chemical, Nuclear, and electrical