F2 IS QZ 10 anwers

1st Term QZ 10 Submission date：_____________ Name：______________________ Class & no.：2 _________(     )

8.2 – 8.3

Word Translation (13 marks)

i    Write down the English terms of the following Chinese terms:

	Chinese term	English term
1	原子	Atom
2	原子核	Nucleus
3	自由電子	Free electron
4	隨機地	Randomly
5	正極	Positive pole
6	負極	Negative pole
7	電流	Electric current
8	安培計	Ammeter
9	安培 (A)	Ampere
10	電壓	Voltage
11	伏特 (V)	Volt
12	千伏特 (kV)	Kilovolt
13	伏特計	Voltmeter

Fill in the Blanks (19 marks)

1     Matter is made up of atoms (1), each of which consists of a positively charged nucleus (1) surrounded by negatively charged electrons (1).

2     Metals are conductors because the electrons inside can free to move around randomly (1).   This kind of electron is called free electrons (1).

3     When a closed circuit is connected to a dry cell, the free electrons are driven to flow in the same (1) direction. They flow from the negative (1) pole of the dry cell to the positive (1) pole. The flow of these electrons form an electric current (1).

4     The size of electric current can be measured by an instrument called ammeter (1)   and it is measured in ampere (1) (A). The correct way to use this instrument is that the positive / red (1) terminal should be connected towards the positive pole of the dry cell and the black terminal towards the negative (1) pole.

5     Voltage (1) of a dry cell is the “push” of free electrons to flow through the circuit and can be measured by a voltmeter (1). It is measured in volt (1) (V) and smaller unit in millivolt (1) (mV).

6     When more dry cells are connected in the same direction, the total voltage is higher (1), and the size of the electric current flowing through is larger (1), provided that other conditions are the same.