Kinds of Energy
What type of energy is produced by a hair dryer?
Heat energy
What kind of charge do electrons have?
A negative charge
What is an example of a power source?
A battery
Fill in the blank
Wood is an example of a ________
Which process involves making an educated guess in science?
Making a hypothesis
What energy is used by a flashlight to produce light?
Electrical Energy
How does an object obtain a negative charge?
By gaining electrons
What is an example of a load?
A light bulb
Fill in the blank
A paperclip is an example of ______
Conductor
Percy is presenting her science fair project to the class. She says this as her final statement "My experiment shows that students get higher grade when they listen to music". Which scientific process best describes this?
Drawing a conclusion
Joy is playing a video game. Describe 4 kinds of energies that are involved in this process.
Electrical energy to power the computer or console, Mechanical energy to press keys or buttons, Light energy from the display screen, and Sound energy from the game noises and sounds
Hoe does an object obtain a positive charge?
By losing electrons
Fill in the blanks
In an electrical circuit, the wires MUST be connected to both the _________ and __________ terminals of the battery.
Positive and Negative
Fill in the blank
_________ are materials that do not allow electricity to flow through them easily.
Insulators
True or False: Carrie is conducting an experiment on whether food eaten before a run impacts the runner's time to complete the race. Carrie must gather opinions for this experiment.
False, opinions should not be gathered in an experiment. Carrie needs to record the facts like the food the runners are eating, and the times of their runs.
A plants must use the process of photosynthesis to obtain food. What is the primary energy transfer in this process?
Light energy (sunlight) to chemical energy (glucose)
Items with what kinds of charges would be attracted to a negatively charged object?
A positively charged object and an uncharged object
Describe how electricity flows through a circuit
Its comes from the power source, through the conductor, and then it is used to power the load.
What does the word 'conduct' mean?
To allow to flow easily
Savannah did an experiment to see if Tylenol or Aspirin work better in relieving headaches. What is the best way for her to be sure that the results are correct?
Replication (doing the experiment several times)
Describe the 2 kinds of energy involved in batteries
Derek rubs a balloon against his hair. The balloon gains a negative charge. What kind of charge does this leave Derek's hair with?
A positive charge
The balloon gained electrons from Derek's hair, which lost electrons.
1. A power source
2. A load
3. A conductor
4. A complete loop
What will happen if you replace the conductor in your electrical circuit with an insulator?
The electricity will stop flowing.
List the order of scientific processes.
Conduct an investigation, Make a hypothesis, record observations, draw conclusions, replicate the experiment