How Can I Smell Things from a Distance

How can molecules travel through the air to reach our nose?

• Through sound waves

• By diffusion

• Via light waves

• Through electrical signals

What is the primary factor that allows us to smell things from a distance?

• Temperature

• Air pressure

• Molecular diffusion

• Light intensity

Which part of the human body is responsible for detecting smells?

• Tongue

• Skin

• Nose

• Eyes

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NGSS.MS-LS1-8

What is the role of olfactory receptors in the process of smelling?

• They amplify sound

• They detect light

• They bind to odor molecules

• They produce mucus

Which scientific principle explains the movement of odor molecules in the air?

• Newton's First Law

• Bernoulli's Principle

• Diffusion

• Photosynthesis

What happens to odor molecules when they reach the olfactory receptors?

• They are absorbed into the bloodstream

• They are converted into sound

• They bind to receptors and send signals to the brain

• They are stored in the nose

How does temperature affect the ability to smell things from a distance?

• Higher temperatures increase molecular movement, enhancing smell

• Lower temperatures increase molecular movement, enhancing smell

• Temperature has no effect on smell

• Temperature changes the color of odor molecules

What is the term for the process by which molecules spread from an area of high concentration to an area of low concentration?

• Osmosis

• Diffusion

• Convection

• Radiation

Which experiment can demonstrate the diffusion of odor molecules?

• Mixing oil and water

• Burning a candle

• Opening a bottle of perfume in a room

• Boiling water

Why do some substances have stronger smells than others?

• They have larger molecules

• They have more volatile molecules

• They are heavier

• They are more colorful