Exploring the Role of Atmospheric Pressure in Everyday Life

What is the primary role of oxygen and carbon dioxide in the atmosphere?

• They are responsible for weather patterns.

• They play a critical role in the chemistry of life.

• They create atmospheric pressure.

• They are the main components of air.

What is the standard SI unit of pressure?

• Newton

• Kilogram

• Pounds per square inch (psi)

• Pascal

At sea level, what is the approximate air pressure in psi?

• 10.1 psi

• 14.7 psi

• 20.3 psi

• 25.6 psi

Why don't we notice the huge forces generated by air pressure?

• Because air pressure only acts downwards.

• Because our bodies are immune to air pressure.

• Because the forces are balanced in all directions.

• Because air pressure is very low.

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NGSS.MS-ESS2-5

What happens when you rotate a glass full of water with a card covering the top?

• The water spills out.

• The card falls off.

• The water stays in the glass.

• The glass breaks.

What is the force acting on a 6 cm diameter glass due to atmospheric pressure?

• 100 Newtons

• 200 Newtons

• 400 Newtons

• 286 Newtons

What would happen if a hole is drilled in the top of the glass in the demonstration?

• The glass would break.

• The water would stay in the glass.

• The water would fall from the glass.

• The card would fall off.

How does the diaphragm help in breathing?

• By pushing air out of the lungs.

• By filtering the air we breathe.

• By changing the volume of the body cavity, altering internal pressure.

• By creating a vacuum in the lungs.

What role does atmospheric pressure play in using a drinking straw?

• It prevents the liquid from rising.

• It pushes the liquid up the tube.

• It cools the liquid.

• It creates a vacuum in the straw.

Why is atmospheric pressure essential for life?

• It creates wind patterns.

• It helps in the formation of clouds.

• It supports the weight of objects.

• It allows us to breathe by moving air in and out of our lungs.

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NGSS.MS-LS1-8