Grade 4 Science Light (Lilin Bangsa)

Light travels in __________ lines.

• straight

• human

• a shadow

• lit candle

Artificial lights are made by __________.

• straight

• human

• a shadow

• lit candle

When light encounters an opaque object in forms __________.

• straight

• human

• a shadow

• lit candle

The production and emission of light by living things is called __________.

• straight

• human

• a shadow

• bioluminescence

We can draw a model of how the light travel using a/an __________.

• straight

• ray diagram

• a shadow

• bioluminescence

A / An electrical __________ does not allow electric current to flow easily.

• insulator

• conductor

Electric current can flow through a __________circuit.

• insulator

• conductor

• closed

• break

A lamp will not light up if there is a ________ in the circuit.

• insulator

• conductor

• closed

• break

Most electrical devices have ______ to turn the electriciy on and off.

• switches

• conductor

• closed

• break

Good electric __________ do not allow electricity to pass through easily.

• insulators

• conductor

• closed

• break