Pre-diagnostic assessment –Electricity
and electrostatics –Grade 8 (MYP3)
Short-response questions
1.
Complete the table below to identify the energy transformation caused by each energy
converter. (4) One is shown for you
Main energy form used
Electrical
Energy converter
Fan
Main energy form
produced
Kinetic energy
Toaster
Flashlight
Car
iPod
Pre-diagnostic test : p.vidyadharan@the-ism.de
Grade 8 Science
S
26.08.2020
2.
This toy car moves when you wind it up and let it go.
Diagram 1: Wind-up toy car
Complete the energy chain below to identify three energy transformations starting with a
person, winding the toy, to the toy moving.(2 marks)



3.
State are the sources of generating Electricity other than fossil fuels. (2)
4.
Describe the future of coal that is used to generate electricity and list out 2 disadvantages of
using coal as a source. (4)
Pre-diagnostic test : p.vidyadharan@the-ism.de
Grade 8 Science
S
26.08.2020
5.
Outline How river can be a source of electricity(4)
Pre-diagnostic test : p.vidyadharan@the-ism.de
Grade 8 Science
S
26.08.2020
6.
Quantitatively analyse the information in the diagrams below and:
a.
compare the efficiency of the energy transformation in a filament electric light bulb with
that of an energy efficient electric light bulb
b.
Describe the safety advantages of using energy efficient electric light bulbs in preference
to filament light bulbs. (6 marks)
Diagram 4: Energy transformations of a filament electric light bulb
Diagram 5: Energy transformations of an energy efficient electric light bulb
Pre-diagnostic test : p.vidyadharan@the-ism.de
Grade 8 Science
S
26.08.2020
Pre-diagnostic test : p.vidyadharan@the-ism.de
Grade 8 Science
S
26.08.2020