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Answer to place stones and capture territory.
Outrun the snow together.
Earn blasts, then hunt the other team.
Answer to earn energy, then climb.
The class blasts through walls together.
Bid on mystery lots. Most money wins.
Sell tours. Nice, standard, or a total scam.
Answer, restock, and serve the rush.
More correct answers pulls the rope your way.
Answer, then shoot down the alien wave.
Answer, then tap to leap the frozen ridge.
What is an electrical hazard?
Which device protects a circuit from excessive current by melting its metal element?
What does GFCI stand for?
Which electrical hazard occurs when a person comes into contact with an energized conductor?
What device automatically opens a circuit when excessive current flows?
Which condition occurs when too many appliances are connected to one outlet or circuit?
What material is commonly used to insulate electrical wires?
What is the main purpose of grounding?
Which of the following is an electrical fire hazard?
Which practice is safest when working with electricity?
Why should electrical appliances be kept away from water?
Why should damage electrical cords not be used?
Why is an overloaded electrical outlet dangerous?
What is the purpose of a circuit breaker?
How does insulation help prevent electrical accidents?
Which combination represents safe electrical practices?
Why should a fuse be replaced with one having the correct rating?
What is the purpose of a GFCI?
Why is pulling an electrical plug by its cord unsafe?
Why should metal objects not be inserted into electrical outlets?
Which situation presents the greatest electrical risk?
Why is proper grounding important for appliances with metal cases?
Which is an example of an electrical burn hazard?
Why should electrical work be performed only by properly trained people when specialized knowledge is required?
Which group contains only electrical safety devices or protective equipment?
Maria notices that her hands are wet before plugging in a lamp. What should she do?
A student sees that an extension cord has exposed copper wires. What should the student do?
A classroom has six high-power appliances connected to one extension cord. What is the safest action?
You smell burning plastic near an electrical outlet. What should you do first if it is safe to do so?
During a laboratory activity, a student notices sparks coming from a power strip. What is the best response?
A student needs to clean an electric fan. What should be done before cleaning it?
An appliance repeatedly causes a circuit breaker to trip. What is the most appropriate action?
A student sees a person receiving an electric shock from an appliance. What should the student avoid doing?
An extension cord is warm while powering an appliance. What should be done?
A student must unplug a computer before moving it. Which method is safest?
A classroom electrical outlet has a cracked cover. What should the teacher do?
A student is using an electrical drill outdoors after rain. What should the student consider first?
A circuit is protected by a 15-A circuit breaker. Several appliances together draw more than 15 A. What is likely to happen?
A student notices that a charger becomes unusually hot while charging a device. What is the safest response?
After an electrical accident, an investigation finds that the equipment had a damaged cord, the outlet was overloaded, and the users had not received safety training. What is the BEST long-term response?
What is the distance between two consecutive corresponding points of a wave called?
What property of a wave refers to the number of complete cycles passing a point per second?
What property of a wave is related to the maximum displacement from its rest position?
Which type of wave can travel through empty space?
Which type of wave requires a material medium to travel?
What is the SI unit of frequency?
Which electromagnetic wave is commonly used for radio and television broadcasting?
Which technology uses sound waves to create images of structures inside the human body?
Which device is primarily used to detect and locate objects using reflected radio waves?
Which property of sound is most directly associated with how loud a sound is perceived?
How are frequency and wavelength related when the wave speed remains constant?
Why can light travel from the Sun to Earth through space?
Why can astronauts communicate using radio signals while in space?
How does increasing the amplitude of a sound wave generally affect the sound?
What mainly determines the pitch of a sound?
Why does sound generally travel faster through solids than through gases?
How does a microphone help in communication?
How does a loudspeaker work in a communication system?
Why are fiber-optic cables useful for communication?
How does radar help in navigation?
Why is ultrasound useful in medicine?
Which statement correctly compares radio waves and sound waves?
Why does a guitar string produce a higher pitch when it vibrates at a higher frequency?
What happens to wavelength if the frequency of a wave increases while its speed remains constant?
Why are echoes useful in some technologies?
A wave has a frequency of 5 Hz and a wavelength of 4 m. What is its speed?
A sound wave has a frequency of 200 Hz and travels at 340 m/s. Which wavelength is closest?
A student strikes a drum harder than before. Which change in the sound wave is most directly expected?
A musician tightens a guitar string and notices that its pitch increases. What wave property has most directly changed?
A doctor uses ultrasound to examine a developing fetus. Which wave behavior makes this possible?
A ship uses sonar to determine how deep the water is. What information is primarily used?
A driver uses a rear-view camera at night. Which type of wave is primarily used to form the visible image?
A television receives information from a broadcasting station using electromagnetic waves. Why can the signal travel through the atmosphere?
A student notices that two speakers produce sounds of equal pitch, but one is louder. Which property is most likely different?
A communication system changes from a low-frequency carrier signal to a higher-frequency carrier signal while maintaining the same wave speed. What happens to the wavelength?
An emergency team uses a flashlight to send a visual signal over a distance. Which property allows the signal to be detected?
A doctor uses an optical instrument to view inside a patient's digestive tract. Why is light useful for this technology?
A navigation system uses reflected radio waves to determine that an aircraft is approaching. What principle is being applied?
A concert hall installs sound-absorbing panels on its walls. What is the main purpose?
A wave has a frequency of 5 Hz and a wavelength of 4 m. What is its wave speed?
A wave has a frequency of 12 Hz and a wavelength of 2 m. What is its speed?
A water wave has a frequency of 8 Hz and a wavelength of 0.5 m. Find its speed.
A sound wave has a frequency of 100 Hz and a wavelength of 3 m. What is its speed?
A wave has a frequency of 20 Hz and a wavelength of 0.25 m. What is its speed?
A wave has a frequency of 50 Hz and a wavelength of 6 m. What is its speed?
A wave travels with a frequency of 25 Hz and has a wavelength of 4 m. What is its speed?
A wave travels at 20 m/s with a frequency of 5 Hz. What is its wavelength?
A sound wave travels at 340 m/s and has a frequency of 170 Hz. What is its wavelength?
A wave travels at 60 m/s and has a frequency of 10 Hz. Find its wavelength.
A wave travels at 100 m/s with a frequency of 20 Hz. What is its wavelength?
A wave travels at 30 m/s and has a frequency of 15 Hz. What is its wavelength?
A wave travels at 150 m/s and has a frequency of 30 Hz. Find the wavelength.
A wave has a speed of 80 m/s and a frequency of 16 Hz. What is its wavelength?
A wave travels at 20 m/s and has a wavelength of 4 m. What is its frequency?
A wave travels at 100 m/s and has a wavelength of 20 m. What is its frequency?
A water wave travels at 12 m/s and has a wavelength of 3 m. What is its frequency?
A wave travels at 60 m/s and has a wavelength of 5 m. What is its frequency?
A wave travels at 200 m/s and has a wavelength of 10 m. What is its frequency?
A wave travels at 150 m/s and has a wavelength of 6 m. What is its frequency?
What happens when light bounces back after striking a surface?
What is the bending of light as it passes from one medium to another called?
What phenomenon separates white light into different colors?
Which optical device uses a curved glass surface to refract light?
Which phenomenon occurs when two or more light waves overlap?
What phenomenon describes the spreading of light around an obstacle or through a narrow opening?
What property describes the orientation of vibrations in a transverse light wave?
Which device is commonly used to split white light into its component colors?
Which type of mirror is commonly used to produce a magnified image when an object is placed close to it?
Which technology commonly transmits information using pulses of light?
Crack the passcode before the zombies get in.
Answer, then swat bugs for bonus points.
Race through questions at your own speed.
Same question on every screen. Fastest wins.
Pick a tile, answer, hit bonuses and steals.
Work, Energy and Power Review
40 questions
