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WorksheetsBOY Sci CBA review
Total questions: 34
Worksheet time: 1hrs 8mins
(4.5A) The properties of several items are recorded in the table below. Which object has the greatest mass?
marble
washer
penny
thumbtack
(4.5B) A student investigated what happens when different substances are added to water. The table shows his results. In which mixture does one substance dissolve in another?
pepper and water
sand and water
sugar and water
flour and water
Students in a science class were lighting bulbs by attaching them to batteries with wires. What form of energy were they exploring?
mechanical
thermal
electrical
sound
(4.6A) People might use a lamp to help them see, but in many cases, the bulb gets quite warm. The two forms of energy being produced by the lamp are -
light and thermal energy
light and mechanical energy
thermal and mechanical energy
mechanical and electrical energy
When smelling a chemical, you should hold it away from your face and ____ the air toward your nose!
drink
waft
clean
fire
An inventor wants to build a surfboard that is the best one on the market. Which physical property of the material used to make the surfboard will she need to measure?
its ability to insulate
its ability to sink or float
its ability to conduct electricity
its ability to be attracted by magnets
The simple chart above was constructed to compare some properties of water in different states. Which property should be put into the second column?
tastes stale
feels smooth
has a strong odor
takes the shape of its container
What is a physical property shared by iron, nickel, and steel?
size
magnetism
ease of bending
inability of rust
Aaron uses the pan balance below to measure the mass of the apple. What does Aaron learn?
The apple’s mass is 10 g.
The apple’s mass is 50 g.
The apple’s mass is 101 g.
The apple’s mass is 110 g.
A teacher used graduated cylinders to collect and analyze information about the volume of rocks. She put 40 mL of liquid into the graduated cylinder on the left. She then placed a rock and 40 mL of liquid into the graduated cylinder on the right. The volume of the liquid and rock in that cylinder reads 75 mL. Analyze the results in the picture below. What is the volume of the rock?
35mL
40mL
75mL
115mL
Is tea a mixture or a solution?
Mixture
Solution
What is a solution?
A type of mixture where one substance dissolves in another
An ingredient.
A liquid.
A gas.
How can we remove sand from a sand and water mixture?
Hands
Filter
Magnet
How can we remove sugar from a sugar water solution?
Melting
Magnet
Put it out in the sun / heat it up / Evaporation
Tweezers
In a mixture, the properties of a substance ______________
do not change and easily separate
change forms and are hard to separate
turn into a liquid and become a solution
become solid pieces of matter
Which of these is an insulator (does not allow electricity to pass though it).
plastic circle
metal scissors
Is this a conductor or an insulator?
conductor
insulator
Is this a conductor or an insulator?
conductor
insulator
Which is an example of mechanical energy?
Bicycle
computer
cell phone
digital clock
Which of the following items is / are conductors?
Wool
Copper
Plastic
Glass
Which of the following is an example of a poor conductor?
Oven Mitt
Metal pot
Metal pan
What is the difference between a conductor and an insulator?
An insulator allows electricity to flow through easily and a conductor does not.
An insulator is magnetic and a conductor is not
A conductor allows electricity to flow through easily and an insulator does not.
A conductor is magnetic and an insulator is not.
A closed electrical path that has all necessary components to allow the electrical charge to flow
parallel Circuit
series Circuit
complete path/closed circuit
insulator
An open electrical path that does not have all necessary components to allow the electrical charge to flow (the light is off!).
parallel Circuit
incomplete path/open circuit
series Circuit
conductor
materials that allow electricity or heat to travel through it. All METALS and Water are good examples of this.
insulator
conductor
series circuit
power source
A path for electric current.
Battery
Electric Circuit
Switch
Conductor
a device that opens or closes a gap in a circuit
switch
load
power source
battery
When the switch is closed the buzzer will sound because -
The flow of electricity is called...
circuit
load
electrical current
power source
