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Questions and Answers
Which of the following correctly describes a rainbow?
Which of the following correctly describes a rainbow?
- A scientific term for a specific type of cloud
- A colorful arch formed by sunlight and raindrops (correct)
- A mythical creature with colorful wings
- A type of bird found in tropical rainforests
What causes a rainbow to form?
What causes a rainbow to form?
- Starlight and fog
- Sunlight and raindrops (correct)
- Moonlight and snowflakes
- Firelight and dust particles
What is the shape of a rainbow?
What is the shape of a rainbow?
- A circle
- An arch (correct)
- A straight line
- A spiral
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Study Notes
Characteristics of a Rainbow
- A rainbow is a colorful optical phenomenon that appears in the sky after a rain shower
- It is a spectrum of light that appears as an arc of colors in the sky
Formation of a Rainbow
- A rainbow forms when sunlight passes through water droplets in the air at a precise angle, causing refraction and dispersion of light
- The refracted light is then reflected off the back of the water droplet and exits the droplet at a different angle, creating the colors of the rainbow
Shape of a Rainbow
- A rainbow is typically circular in shape, but it appears as an arc because the Earth gets in the way of our line of sight
- The arc shape of a rainbow is actually a segment of a circle, with the center of the circle being the position of the sun
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