The name of instrument that use to measure voltage is ...................., the unit of voltage is ................
voltmeter, volt
Why metal able to conduct electricity?
Because contain a lot of electrons
What will happen if we add resistor in a circuit?
The current will be decreased/ move slower
mention 3 example of renewable energy
wind, water, sun energy
Mention 3 examples of conductor and insulator electricity
Conductor: gold, copper, iron Insulator: Plastic, wood, fabric, glass
What will happen if we add more cells in a circuit?
The lamp will be bright/ the current will be increased, the voltage will increased
Mention 3 types of fossil fuels
coal, oil, natural gas
Positive and negative charges will ............. each other, and Positive and positive charges will.............each other
attract , repel
The other name of series circuit and parallel circuit
End to end, side by side
How coal was formed?
Coal contains the energy stored by plants that lived hundreds of millions of years ago in swampy forests. Layers of dirt and rock covered the plants over millio
Draw the symbols for a cell, switch, and lamp
look at the picture
The current/ energy flow from ............pole to ............. pole of the cell
positive, negative
The electrons flow from ..............pole to ......... pole of the cell in a circuit
negative, positive
13. The name of instrument that use to measure electric current is ............, the unit of electric current is .......................
ammeter, ampere
If you rub acrylic with ................ , the electron will move from ............ to .................... So, acrylic become ............... charge and the ............ become ............ charge.
cotton, acrylic, cotton, positive, cotton, negative
Mention an experiment that you have tried before about static electricity
Balloon with hair and small paper
Atom are made up from some charged particle, inside nucleus, there are .............and ............. charged , in shell the charged is ........................
positive, neutral,negative
mention 3 examples of non-renewable energy resources
coal, nuclear, natural gas
If you rub polythene with ........., the electron will move from ..........to ......... So, polythene become........ charge and the ................. become ........ charge.
wool, wool, polythene, negative, wool, positive
What do you know about energy?
energy is the ability to do work. In other words, everything that can do work has energy. In the case of energy, doing work is also known as causing or making c
What will happen if we use more lamps in a circuit with the same number of battery?
The lamp will be not too bright