A class prepared an electrical circuit using, a battery, connecting wires , a switch board and bulb. How can they make the bulb brighter?
An electrician will need to wear a rubber gloves to work on an electric connection, this will protect him from …
Which of this materials will allow sound to travel through it the most?
What material would be safest to use as an insulator to cover electrical wires?
What is Pitch?
Vibrations go through your ear to your ear drum and cause your eardrum to ____________
If we remove the air in a room, there is no material to _________ so there will be no ___________ to hear.
Skull
Rib
Ball and Socket
Spine
Cell
Wires
Light bulb
Switch board
Crocodile switch
Explain in your own term what a circuit is.
Circuit 1 - A bulb, battery and an open switch
Circuit 2 - Two batteries, one bulb and a closed switch
Circuit 3 - Two bulbs, one battery and an open switch
What can be the long-time effect of loud sounds on the human ear?
What is the sound limit for a human ear?
Does hearing improve as you grow older, because you have had more practice at listening?
What do you need to do to keep the high sound level in your room from disturbing your neighbours?
Why will a dog pass a hearing test better than humans?
Due to the pitch of a sound,a noise is ---------- sound ,While, a tune from a piano is ----------- sound.
Pitch is not the same as volume, Why?