Exploring Visible Light Waves in the EMS

The video explains electromagnetic radiation, focusing on visible light, its properties, and its scientific significance. It covers how visible light helps in understanding atmospheric composition, temperature of stellar objects, and Earth's changes. The video also discusses NASA's use of visible light and laser altimetry for mapping and exploration, and how the Hubble Space Telescope uses visible light to explore the universe.

What did people originally believe about the prism's effect on sunlight before Newton's experiment?

• It reflected the white light.

• It absorbed the white light.

• It colored the white light.

• It split white light into different colors.

What can minute gaps in energy at specific visible wavelengths reveal?

• The speed of light

• The age of the universe

• The distance between stars

• The physical condition and composition of stellar and interstellar matter

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Why does Earth's atmosphere generally appear blue?

• Because of the presence of water vapor

• Due to the scattering of blue light by nitrogen and oxygen particles

• Because of the reflection of the ocean

• Due to the absorption of red light

What happens to the color of a flame as it burns hotter?

• It turns green

• It turns red

• It turns yellow

• It turns blue

What color would the Sun appear if its surface temperature were 3,000 degrees Celsius?

• White

• Reddish

• Blue

• Yellow

What type of data does NASA's EO-1 image combine to distinguish between snow and volcanic ash?

• Visible and ultraviolet data

• Visible and infrared data

• Infrared and ultraviolet data

• Microwave and infrared data

Since when have images from NASA's Landsat satellite been used to study changes on Earth?

• 1980

• 2000

• 1990

• 1972

What does the Mars Orbiting Laser Altimeter measure to map the topography of Mars?

• The temperature of the surface

• The time it takes for a laser signal to return

• The magnetic field of the surface

• The color of the surface

What is one of the unique measurements that laser altimeters can make?

• The temperature of the atmosphere

• The depth of oceans

• The height of clouds

• The speed of wind

What has the Hubble Space Telescope used visible light to do?

• Map the surface of the Moon

• Create images that spark imagination and increase understanding of the Universe

• Measure the speed of light

• Detect gravitational waves

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