WorksheetsScience-3 3rd Periodical Periodical Exam
Total questions: 20
Worksheet time: 10mins
What is the principal source of energy?
Moon
Sun
Sky
Which of the following has an artificial source of light:
bonfire
moon
sun
Which of the following has a natural source of light?
lampshade
stars
candle
Which activity needs light?
reading
sewing
writing
all of the above
What is the major source of heat on earth?
moon
star
sun
fire
Which is a harmful effect of too much heat to humans?
sweating
dried clothes
warm feeling
sun burn
What should you wear if you will stay long under the sun?
eyeglasses
wide-brimmed hat
boots
bracelet
Which object can protect you from too much light?
sunglasses
jacket
water
lotion
You can produce heat by ________?
rubbing two stones together
drying leaves
reading books
staying under the sun
Which uses heat?
watering of plants
sweeping the floor
cooking
freezing
It does not allow light to pass through.
transparent
traslucent
opaque
It allow SOME light to pass through.
Transparent
opaque
translucent
It allow light to pass through.
transparent
translucent
opaque
Which of the following is opaque?
clear glass
wooden door
jalousy
Which of the following is translucent?
bottled water
cardboard
wax papper
Which is transparent?
mirror
thick book
jalousy
Who invented the telephone?
Charles Babbage
Zyrwon Zaworkvski
Alexander Grahambell
Who invented the LIGHT BULB?
Steve Jobs
Benjamin Franklin
Thomas Edison
Who invented the computer?
Charles Babbage
Benjamin Franklin
Martin Cooper
What was Mark Zuckerberg invented?
Tweeter
Titktok
