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Learn. Some optical instruments - Waves. Light and sound
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Some optical instruments Most optical instruments, like microscopes or telescopes, consist of lenses, mirrors and prisms. Lenses Lenses are disc-shaped, and one or both sides are curved. They are made…
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Final Autoevaluation T12 04 - Waves. Light and sound
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Answer the following questions: Why does sound not propagate in space? Why does sound reach its highest speed in solid media? What is pitch? And timbre?
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Final Autoevaluation T12 03 - Waves. Light and sound
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Answer these questions: What is sound? What are the characteristics of sound? At what speed does sound travel through the air?
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FInal Autoevaluation T12 05 - Waves. Light and sound
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Make calculations and answer the questions: A robot sent a signal at the speed of light from the planet Mars. It took 3 minutes to reach Earth. How far away is Mars? d = million kilometres A sound is…
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True/False. Groups of waves on the electromagnetic spectrum
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Answer true or false: All electromagnetic waves can be seen. Ultraviolet rays have more energy than visible light. Ultraviolet rays have more energy than gamma rays. The different colours of visible…
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Final Autoevaluation T12 02 - Waves. Light and sound
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Answer these questions: What is the phenomenon of reflection of light? And refraction? Why do we see the grass as green or a red apple?
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Final Autoevaluation T12 02 - Waves. Light and sound
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Match the definitions to the concepts: This happens when light rays bend as they pass through a transparent medium. They then pass to a different medium that is also transparent. This is an effect by…
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Final Autoevaluation T12 06 - Waves. Light and sound
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A train that is 2km away whistles. How long does the sound take to reach our ears through the air? And through a steel railway track? t = segundos.
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FInal Autoevaluation T12 06 - Waves. Light and sound
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Describe each of the following scenes and explain what you know about them:
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Final Autoevaluation T12 07 - Waves. Light and sound
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Answer: Name the primary colours. What are the primary colours of pigments? What color is obtained by mixing the colour red with green? What colour is obtained by mixing the colour magenta and cyan?
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