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WorksheetsReview - Electrical Circuit and Separating Mixtures
Total questions: 20
Worksheet time: 10mins
Which mixture can be separated using a filter?
sand and iron filings
saltwater
sand and water
none of the above
Which mixture can easily be separated by Hand
The science teacher accidentally combined metal shavings with sand, what method can be used to separate the mixture?
If you had a mixture of rocks and sand and needed to separate them what method would work best?
You have a glass of salt and water, what is the best method to separate the salt out of the water?
What methods have we discussed, that we could use to separate mixtures? Check all that apply, there will be more than one answer.
Handpicking
Sieving
Evaporation
Magnetic Separation
Precipitation
What is the definition of a Mixture?
a combination of one material. Example Cheerios.
a combination of two or more materials that can be easily separated by some physical means.
Which can give an electric force?
Rubbing dry objects together
Rubbing wet objects together
Different sides of magnets touching
Same sides of magnets touching
Incandescent light bulbs have filaments that are made mainly from the element ________.
Aluminum
Silicon
Tungsten
Copper
In a simple circuit, why does the bulb light when you close the switch?
Because the switch produces electricity.
Because closing the switch completes the circuit
Because closing the switch breaks the circuit
Because the switch produces 1.5 volts
Observe the diagram below, what will happen to the whole circuit?
The bulb won’t light up
The bulb becomes dimmer
The bulb becomes brighter
The bulb will explode
What are the disadvantages of series circuits of the light bulbs?
Choose which bulb to shine
Difficult to connect
More parts than parallel circuits
All bulbs go off when 1 is broken
Which are all electrical conductors?
Plastic, silver, copper
Wood, fabric, gold
Silver, copper, iron
Wood, rubber, plastic
What object do we need to separate metals from other components?
Filtre
Magnetic separation
Water
Magnet
Identify which images are HETEROGENEOUS MIXTURES! (Check all that apply)
This type of paper allows liquid to pass through it. What tool is it?
sieve
filter
It changes electrical energy into mechanical energy
Motor
Buzzer
Electrical cell
Light bulb
