Science 7 - 3rd Quarter

2. a familiar form of energy
energy required to operate
appliances, devices, gadgets
and machines

5. is the continuous flow of
electrons in a material.
Transformed into many other
forms of energy.

6. atoms are neutral (no charge)
the number of positive and
negative particles are equal

7. some objects can lose electrons
and some can gain electrons.
why only electron is
transferred???

8. there is more proton compared to
electrons
so the objects is said to be
POSITIVELY CHARGED

9. there is more electrons compared
to protons
so the objects is said to be
NEGATIVELY CHARGED

10. the number of electrons lost is
always equal to the number of
electrons gained.
LAW OF CONSERVATION OF
CHARGE

11. Charges cannot be
created nor destroyed,
but can be transferred
from one material to

12. an invisible force acting on charge
materials or objects
attract
repel

13. Like charges repel and
opposite charges
attract.

14. happens when a neutral object is
place near a charge object
charges in the neutral object
rearrange such that opposite
charges are brought near each

16. the process of removing excess
charges on an object
providing a ground

17. any object that can be a source of
unlimited electrons in order to
neutralize the charged object
GROUNDING

21. happens when two objects are in
direct contact and rubbing each
other.
as object rapidly strip away, one
loses electron and the other gains

22. process wherein an object is
charged without actual contact to
any other charged object

23. process wherein a neutral object
is charged by direct contact with a
charged object

25. a material that permits chargers
to flow freely within it
metals are usually good
conductors of electricity

26. are materials that hinder the flow
of charges
examples are glass, porcelain,
plastic and rubber

30. a path through which charges can
flow