Science Concepts in Everyday Life

The video tutorial by Sanjay Basu covers various topics from a science paper. It begins with an analysis of a food web, focusing on the minnow and its role as a carnivore. The tutorial then explores a chemical reaction between baking soda and vinegar, highlighting observable changes. It proceeds to discuss the reflection of light using mirrors, emphasizing changes in direction. The characteristics of igneous rocks and their cooling rates are examined, followed by an experiment on yeast growth, measuring balloon circumference, and the role of acid in the human body.

Which of the following is a correct food chain involving the minnow?

• Shrimp -> Grass -> Minnow -> Otter

• Grass -> Minnow -> Shrimp -> Gull

• Minnow -> Shrimp -> Grass -> Gull

• Grass -> Shrimp -> Minnow -> Otter

Which animal in the food web is a carnivore?

• Grass

• Minnow

• Shrimp

• Terapin

What observation indicates a chemical reaction between baking soda and vinegar?

• The mixture changes color

• The mixture becomes solid

• The mixture fizzes and bubbles

• The mixture emits light

Which product of the reaction between baking soda and vinegar is a colorless liquid?

• Vinegar

• Carbon dioxide

• Water

• Baking soda

What happens to a ray of light when it is reflected by a mirror?

• It changes color

• It changes direction

• It stops

• It speeds up

How can Safia increase the total number of reflections in her experiment?

• Use a larger mirror

• Extend the top mirror

• Change the color of the mirrors

• Use a brighter light source

Which igneous rock has the largest crystals and cools the slowest?

• Rock A

• Rock B

• Rock C

• Rock E

Why does Igneous Rock E have no crystals?

• It was exposed to sunlight

• It contains no minerals

• It was formed under high pressure

• It cooled extremely fast

How does Ahmed measure the circumference of the balloon in his experiment?

• By using a protractor

• By using a scale

• By using a thermometer

• By wrapping a string around it and measuring the string

Which organ in the human body uses acid as a defense mechanism?

• Stomach

• Lungs

• Heart

• Liver