Nstech Grade 4

Unwanted or harmful sounds that carry on for a long time

Musical instrument that can be found all over the world is _______

A measure of how loud or soft sound is.

Living things need ______ in food to live, grow and stay healthy.

______ is an example of percussion instruments.

For the drum to make sound we need to ___ it.

The output of energy when you cook with coal stove is _____

We hear sound in our ear.

Musical instruments that we play by blowing air into it _________

Energy makes things happen, move or change.

The main source of energy is _____

A hearing loss caused by noise will not get better

Something that has two or more parts that work together is _____

Batteries are the source of energy for ___

Guitar is an example of string instruments.

Herbivores are animals that eat both plants and animals.

Vibration is to move to and from with small and fast movements.

Plants use _______ to make their own food.

___________ damages hearing immediately.

__________ is a soft sound.

The _______ takes the message about sound to the brain.

The sound that travels through the air is ____

Fire produce heat energy and light energy.

They are examples of food from animals.

Hearing aids are apparatus that fits behind or inside the ear and makes the sound louder.

_______ is source of energy for cars.

Machines need _______of energy to work.

Our body gets energy from ______

Energy that the sun provides are ____

Volume is measured in decibels