Reflection/Refraction/Absorption

Which is the correct order from low frequency to high frequency?

• 1. Radio, Micro, Infrared, Visible, UV, X-ray, Gamma

• 1. Micro, Infrared, Radio, Visible, X-ray, Gamma, UV

• 1. Radio, Infrared, Visible, UV, Microwave, X-ray, Gamma

• Gamma, X-ray, UV, Visible, Infrared, Micro, Radio

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1. Which electromagnetic wave is responsible for you feeling heat?

• 1. UV

• Visible Light

• 1. Infrared

• 1. Gamma

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1. Waves are characterized by their different wavelengths and frequencies. These properties have an inverse relationship. The longer the wavelength, the shorter the frequency. Below are three waves: Infrared, Gamma, Radio. Which is responsible for you feeling hot? 

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Use the graph below to answer questions 4-6. The graph shows the percent of seeds from two plant species that sprout when grown in water containing different amounts of salt. Which species grew more in fresh water (0 salinity)?

• Species 1

• 1. Species 2

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Use the graph below to answer questions 4-6. The graph shows the percent of seeds from two plant species that sprout when grown in water containing different amounts of salt. 

At what salinity did species 1 seeds stop sprouting?

• 1. 200

• 1. 400

• 1. 600

• 1. 800

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1. Which of the following best summarizes the effects of saltwater on these plant species?

• 1. Species 1 can sprout only in freshwater, and species 2 can sprout only in saltwater

• 1. Both species can sprout in freshwater and saltwater, but Species 2 can sprout in a higher salt concentration than Species 1

• 1. Both species need salt water but Species 2 needs more salt than Species 1

• 1. Species 1 can sprout only in water with low salt concentration, but Species 2 is not affected by salt concentration 

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