Light Assessment 2025

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How are electromagnetic waves different from other waves?

• they have very short wavelengths
• they can travel through a vacuum and through matter
• they transmit energy instead of matter
• they can change direction by reflection when they strike an object

Light waves that cross from an air medium to a water medium will

• change speed and direction
• be focused into a straight line
• lose energy and disappear
• reflect off the water's surface

A material that reflects or absorbs all of the light that strikes an object is a(n)___________

• translucent material
• opaque material
• transparent material
• liquid

This is a wave pattern diagram for two transverse waves, how do the waves compare?

• both waves have the same frequency
• wave A has a longer wavelength than wave B
• both waves have the same wavelength
• wave A has a higher frequency than wave B

Why does the leaf of a plant look green?

• because it absorbs green light
• because it reflects green light
• because it's a mixture of blue and yellow light
• because of photosynthesis

The bending of light due to change of speed is called

• reflection
• concave
• refraction
• convex

What is the correct order of colors in the spectrum of visible light?

• red, orange, yellow, blue, purple, violet
• purple, orange, yellow, green, blue, red
• white, yellow, green, blue, purple, black
• red, orange, yellow, green, blue, indigo, violet

The electromagnetic spectrum is the complete range of electromagnetic radiation ranging from radio waves to gamma rays. Which type of radiation in this spectrum is associated solar energy?

• infrared rays
• x-rays
• radio waves
• sound waves