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WorksheetsLight, Heat, Electricity, Sound
Total questions: 30
Worksheet time: 15mins
If you connect the components of the electric circuit like shown in the picture, will the bulb light up?
Yes
No
Will the bulb light up in the electric circuit like the picture shown?
Yes
NO
What object reflects light in the same direction like shown in the picture?
metal spoon
brick
cardboard
wooden plank
What object reflects light in the same direction like shown in the picture?
newspaper
shiny paper
wrapping paper
cardboard
What object reflects light in the different direction like shown in the picture?
shiny paper
alumunium foil
mirror
newspaper
What object reflects light in the different direction like shown in the picture?
mirror
wrapping paper
gold necklace
alumunium foil
What material reflects light in the different direction like shown in the picture?
wood
metal
mirror
plastic
The boy in the picture cannot see the light through the hose, why do you think so?
Because the hose is too small
Because light only travel in a straight line
because light can be reflected
because light does not want to appear
What will happen if the metal filament has melted?
the bulb can produce light
the bulb cannot light up
the bulb can be used only with greater energy
the bulb must be fine.
The unit we use when we measure the loudness of a sound ..
newton
decibel
milliliter
kilogram
What is the name of a device that is used to open and close a circuit easily without connecting and disconnecting the wires?
Battery
Switch
Conductor
Insulator
A fine metal wire that becomes hot and produces light when an electric current passes through it is called a _________________.
filament
circuit
wire
battery
A material through which electric current CANNOT pass easily is a/an
insulator
conductor
Which of the following is NOT a good insulator
plastic
glass
metal
rubber
Alvin and the Chipmunks voices are examples of which pitch?
high
low
A deep sound has a ______ pitch.
low
high
... is how loud the sound is.
intensity
pitch
.. refers to the sharpness of the sound
pitch
intensity
Most thermometers work because matter ...... when it is heated
expands
reduces
disappears
loses mass
Submarines under the sea use ... to see objects above the sea.
reflectors
telescope
periscope
stethoscope
we cannot see objects through this material.
transparent
translucent
opaque
clear
brick wall reflect light in ... direction
same
different
This is not the example of flammable liquid?
nail polish
perfume
insect spray
mineral water
How do we loosen a metal lid that is stuck on a jar?
We run cold water over the metal lid
We run hot water over the metal lid
This is the poor conductor of heat
Metal
Gold
Wood
copper
How do we decrease the pitch of the guitar sound?
by decreasing the tightness of a string
by increasing the tightness of a string
by strumming the guitar harder
by strumming the guitar slower
How do we increase the intensity of a sound made by a drum?
by striking it softer
by striking it with greater force
THis is NOT way to protect our ears
Always go to noisy place
Rest your ear in a quiet environment
Keep the volume of the music low
Wear ear plugs when going to noisy places
What keeps electricity from getting to you?
insulator
conductor
electric circuit
metal filament
What do you call an object that allows electricity to run through it easily?
conductor
electric circuit
insulator
switch
