Science MCQs

Sprinkle irrigation uses spray heads to moisten the whole soil surface.

While other methods are used sealing in an airtight container is a common final step to prevent contamination by air and microbes.

Dehydrating means removing water or moisture from food which inhibits the growth of spoilage microorganisms.

The stretched balloon over the funnel acts as a diaphragm vibrating with sound waves from the heartbeat.

Removing the bottom creates a large opening making it easy to refill the bottle with water without detaching it.

Drip irrigation applies water directly to the root zone of plants to conserve water.

A stethoscope is a medical device used for listening to the heart beat and pulse rate.

A sanitizer is a liquid mixture used to kill germs on surfaces like hands.

Food preservation techniques prevent the growth of microorganisms like bacteria and fungi.

Vinegar acts as a preservative by preventing microbial growth.