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Science

Last updated over 5 years ago
27 questions
DAATI’S PRIDE SCHOOL YEAR 4 2019/2020 SESSION
3RD TERM ASSESSMENT
Section A: Instruction: Answer all questions
1

A class prepared an electrical circuit using, a battery, connecting wires , a switch board and bulb. How can they make the bulb brighter?

1

An electrician will need to wear a rubber gloves to work on an electric connection, this will protect him from …

1

Which of this materials will allow sound to travel through it the most?

1

What material would be safest to use as an insulator to cover electrical wires?

1

What is Pitch?

1

Vibrations go through your ear to your ear drum and cause your eardrum to ____________

1

If we remove the air in a room, there is no material to _________ so there will be no ___________ to hear.

Pair the bones of the skeleton below with their appropriate functions included in this box.
Movement,Support,Protection
Remember, two bones may have the same function.
1

Skull

1

Rib

1

Ball and Socket

1

Spine

Type what the items in the questions below does in a circuit.
1

Cell

1

Wires

1

Light bulb

1

Switch board

1

Crocodile switch

1

Explain in your own term what a circuit is.

Build the following circuits.
Draw your circuits in the spaces provided below.
1

Circuit 1 - A bulb, battery and an open switch

1

Circuit 2 - Two batteries, one bulb and a closed switch

1

Circuit 3 - Two bulbs, one battery and an open switch

1

What can be the long-time effect of loud sounds on the human ear?

1

What is the sound limit for a human ear?

1

Does hearing improve as you grow older, because you have had more practice at listening?

1

What do you need to do to keep the high sound level in your room from disturbing your neighbours?

1

Why will a dog pass a hearing test better than humans?

1

Due to the pitch of a sound,a noise is ---------- sound ,While, a tune from a piano is ----------- sound.

1

Pitch is not the same as volume, Why?