When all electrons travel in one direction it is called  _______ and when electrons change direction many times per second it is called _______

When there is an excess of electrons on one end of a circuit there is a potential difference.

Which type of circuit has two or more paths for current to flow?

In a household wire how far does the electric current travel each second?

Electrons can move between orbital shells but not between atoms.

What is happening when two objects rub against each other and transfer electrons?

Object A has 24 protons and 28 electrons. Object B has 24 protons and 26 electrons. Which object is positively electrified?

 4.1 CASE STUDY Mr. and Mrs. Brown prepare vetkoek every working day. They fry and sell it where people can buy it on their way to work. Tip – They are lacking some marketing aspects.     

  QUESTION 4     Answer all the questions below.   

1.1 Mould multiplies rapidly on the following kinds of food: (1)