16 Questions |
By Latifaalshukeili | Last updated: Feb 13, 2018
| Total Attempts: 75
Questions and Answers
Objects that have ________ charges attract each other (one of the object is positively charged and the other is negatively charged).
Objects that have similar charges repel each other Two negatively charged objects will [_______] each other
A charged object can [__________] an uncharged object
For an object to become positively charged, its [_______] charges move towards another object
If you rub one balloon with a wool cloth, and the second balloon with a plastic wrap. The two balloons will [_______] each other.The balloon rubbed with the wool cloth will get a [_________] charge and the balloon rubbed with the plastic wrap will get a [________] charge, and since opposite charges attract the balloons will [__________] each other.
If you rub a ruler against your hair, the ruler attracts the negative charges and it get [________] charged. The negatively charged ruler is able to attract the neutral bits of paper because charged objects always [______] uncharged objects.
The energy of moving negative electric charges is called [______ ________].e.g. which allows a television to function properly
An object or a material that allows electric charges to move through it easily is a [__________]. e.g. copper, silver, steel, and tap water
An object that does not allow electric charges to move through them easily is an [________]. e.g. rubber, wood, plastic
The inside of the electrical wire is made of [________] which is a conductor, to be able to conduct the electric current. The outside is made of [_______] which is an insulator (so we do not damage ourselves when we hold the wire).
A lamp or a light bulb, converts electrical energy into [________] energy
A radio speaker or a buzzer converts the electrical energy into [_______] energy
When the alarm rings, the electrical energy is converted into [______] energy. The screen of the alarm clock converts, electrical energy into [_______] energy.
A toaster converts electrical energy into [_________] energy.
The ability to cause a change is called ________ such as light energy, electric energy, sound energy, chemical energy.
The main source of energy that humans need to do their daily activities is _________ energy in food