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WorksheetsNovember Review
Total questions: 40
Worksheet time: 1hrs 8mins
..................... the source of energy in the electrical circuit
The electrical switch
The battery
The electrical resistance
The connecting wire
All of the following are methods of heat transfer except ...................heat
Convection
Conduction
Equilibrium
Radiation
.......................Replacing a wooden piece instead of an aluminum piece in the circuit causes
Current flow
Open circuit
Closed circuit
Light the bulb
If the boiling point of the liquid is 100 degrees Celsius, it is likely that this liquid is
Mercury
Water
Alcohol
Bromine
When a lamp is turned off in a parallel electrical circuit, the other lamps remain lit
True
False
The forces of attraction between molecules increase when the temperature is raised.
True
False
Glass can be formed by heat
True
False
Does solid matter contract when its temperature rises?
True
False
What happens when (a) ?
the thermometer is placed in hot water
Electric wires are made of copper or aluminum. Mention the reason.
(a)
Complete
Force (a) affects bodies and maintains stability on the surface of the earth
Complete
The working principle of the thermometer depends on the change in (a) of the liquid with the change in temperature
When a light bulb burns out in a circuit connected in (a) the other bulbs go out
When heating a substance, it undergoes .......... thermal
Stability
Contraction
Expansion
Equilibrium
.....................The flow of electric charges through wires is called
Electrical resistance
Electric current
Electrical circuit
Electric switch
Used to measure the temperature of materials
Barometer
Thermometer
Compass
Measuring container
...................All of the following materials are attracted to magnets except
Wood
Nickel
Iron
What happens when (a) ?
A magnet is moved inside a conductive metal coil connected to a galvanometer
What is meant by (a) ?
Thermal expansion
When the thermal energy of bodies increases..................their kinetic energy
increases
decreases
becomes zero
remains constant
................... is used to limit the flow of electric current in the circuit
battery
electric generator
electric switch
electrical resistance
....................The shape of glass is fixed and transformed into a strong solid when
Gathering it
Melting it
Cooling it
Evaporating it
The factors that the strength of gravity depends on are
Distance and mass
Mass and shape
Size and shape
Mass and size
Write the scientific term
Space around the magnet where the effects of its magnetic force are observed
(a)
Write the scientific term
The temperature at which a substance changes from solid to liquid
(a)
Write the scientific term
Decrease in the volume of matter when its temperature drops
(a)
Write the scientific term
One of the dangers of electricity occurs as a result of the electric current flowing through the human body
(a)
State the importance of :: galvanometer
(a)
Complete
(a) When the size of the magnet increases, its strength
Write the scientific term
A device that converts mechanical energy in the turbine into electrical energy
(a)
Explain the following
Why are electrical wires covered with a layer of plastic or rubber?
(a)
Materials contract with heat and expand with cold
True
False
Electric current can be generated using a magnet
True
False
The electric current flows in one direction in a series connected circuit
True
False
When a liquid freezes, the speed of molecular movement increases.
True
False
Material particles are characterized by having a fixed shape and a fixed volume
Liquid
Gas
Solid
Which of these materials makes the electrical circuit open when connected to it?
Copper
Rubber
Iron
Aluminum
The boiling point of mercury ................. degrees Celsius
100
150
450
375
The components of an electric circuit are the battery and the electric switch.
True
False
Write the scientific term
Materials whose particles move in a vibrational motion in their positions
(a)
