Static Electricity
After rubbing a balloon against a sweater, what is the overall charge of the sweater?
Overall positive (less electrons)
True or False. An electromagnet is an example of a permanent magnet.
False. An electromagnet is a temporary magnet that can be turned on and off.
What is another name for stored energy?
Potential energy
Which travels faster in air? Light or sound
Light
On the title slide for every lesson, the "homework" section was called...
Assignments OR To-Do (It's not really homework if you finish your assignment before you go home)
Why do electrons transfer instead of protons or neutrons?
Their location on the outside of atoms...easier to remove than the protons and neutrons in the nucleus (center)
What type of energy is needed in order to produce a magnetic field?
Electricity/electric current
What type of energy moves through the wires of a closed circuit?
Electrical/electricity
Name an example of a wave that does not require a medium to travel.
Light (Electromagnetic Waves)
What five class periods did Ms. Dai teach this year?
1,3,4,6,7
What will two overall negatively charged objects do?
Repel (go apart)
What 3 materials are needed to make a basic electromagnet?
Power source (Ex: Battery)
Conductor (Ex: Wire)
Core
What type of potential energy is in the food we eat?
Chemical
What about a sound wave determines the volume of the sound heard?
Amplitude (Height)
Identify the red, yellow, green and blue corners from our 4 Corners Kahoot games.
Red (corner with the fire extinguisher)
Yellow (corner with the puzzle table)
Blue (reading corner)
Green (corner with the boxlight)
How does a negatively charged object become neutral again?
By discharging (getting rid of the negative charges)
Identify 2 ways to strengthen an electromagnet.
Increase current
Increase voltage
Increase number of coils/wraps
Provide two other ways to say "radiant energy".
Light
Electromagnetic energy
Red, Green, Blue
What are the full names of the two mini pumpkin class pets?
Beatrice the V and Trisha the VI, friend of Michelle and all
How is a negatively charged balloon able to stick to a neutrally charged wall?
The protons of the wall are attracted to the electrons of the balloon.
Name 3 ferromagnetic materials that could be used as an electromagnet core.
Steel, nickel, iron, cobalt, neodymium
Why is sound considered a type of kinetic energy?
Sound travels through vibrating particles of the medium. Vibrations are a type of motion, hence kinetic energy.
What is the range of human hearing, in Hertz (Hz)
20-20,000 Hz
Currently, how many students are in Ms. Dai's science class across all 5 periods? (Will accept + or - 5 students)
128 students