Scientific Concepts Quiz

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Questions and Answers

Why is the Earth round?

Scientific

How do the stars stay in the sky?

Scientific

Why do girls like the color pink?

Non-Scientific

How long does it take for a giraffe's food to reach its stomach?

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Why do only mammals have hair?

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How can humans see color?

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Why do boys like sports?

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How do you become rich?

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What is lava made of?

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Why are lemons sour?

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Why can't humans fly?

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Did dinosaurs ever exist?

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Why do humans need oxygen to survive?

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How do people have freckles?

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How are waves formed in the ocean?

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Flashcards

Why is Earth round?

The Earth is round due to gravity pulling all matter towards the center, forming a sphere (the lowest energy state).

How do stars stay in the sky?

Stars stay in the sky due to a balance between their gravity and their energy produced through nuclear fusion.

Why only mammals have hair?

Mammals have hair for insulation, camouflage, and sensory functions. Hair is made of keratin, a protein.

How can humans see color?

Humans see color because of specialized cells in their eyes called cones, which are sensitive to different wavelengths of light.

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What is lava made of?

Lava is made of molten rock, gases, and mineral crystals erupted from a volcano.

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Why can't humans fly?

Humans can't fly because they lack the necessary physical adaptations like wings, lightweight bones, and powerful muscles to generate sufficient lift.

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Why need oxygen?

Humans need oxygen to survive because it's essential for cellular respiration, the process that converts food into energy.

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How do people have freckles?

People have freckles due to an increased production of melanin (pigment) in certain skin areas, triggered by exposure to sunlight.

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How are waves formed?

Waves are formed in the ocean by wind transferring its energy to the water's surface.

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Study Notes

Scientific Questions

  • Earth's shape is due to gravitational forces that pull matter into a spherical form.
  • Stars remain in the sky and maintain positions due to gravitational interactions and the dynamics of celestial objects.
  • Giraffe's food takes considerable time to digest, typically around 24-48 hours, to travel through their digestive system.
  • Only mammals possess hair as a characteristic feature, aiding in insulation, sensory perception, and protection.
  • Humans perceive color through specialized cells in the eyes called cones, which are sensitive to different wavelengths of light.
  • Humans cannot fly due to anatomical limitations such as bone structure, muscle mass, and lack of wings needed for flight.
  • Oxygen is essential for human survival as it is a critical component in the process of cellular respiration, producing energy.
  • Freckles result from an increase in melanin production in the skin, influenced by genetic and environmental factors.
  • Ocean waves are formed primarily by wind action on the water surface, generating energy that travels across the ocean.

Non-Scientific Questions

  • Preferences for colors, such as girls liking pink, can stem from cultural influences and societal norms rather than biological factors.
  • Interest in sports among boys may correlate to social conditioning and cultural expectations rather than inherent abilities or traits.
  • The pathway to becoming rich often involves personal choices, opportunities, socio-economic background, and sometimes luck.
  • The sourness of lemons arises from their high citric acid content, a common trait among citrus fruits.
  • Discussions about dinosaurs often revolve around their historical existence, based on fossil evidence and scientific research into prehistoric life.

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