Natural Sciences grade 8 Term 3

A circuit can ____ when a very large current flows through it.

• bom

• explode

• overheat

The retina contains specialised receptor cells which convert light energy into.

• visual energy

• electric nerve impulses

• potential energy

Which light is refracted the most?

• violet

• blue

• indigo

• orange

What is used to break up water into hydrogen and oxygen?

• Fuel

• Electrolysis

• Hammer

What does LED stand for?

• Light emitting diode

• Light emission diode

• Light electrical diode

• None

What is the correct symbol for a light bulb?

• 
• 
• 

The planets and all light - reflecting objects are examples of .... objects

The filament of a light bulb is made up of _____

What unit is a current measured in?

• Volts

• kelvin

• ampere

• kilometers

A rainbow is formed when _____ light is dispersed by fine droplets of rain.

• red

• blue

• white