Light Waves Pre-Assessment

Front

What is wavelength in the context of light waves?

Back

Wavelength is the distance between consecutive peaks (or troughs) of a wave. It determines the type of light, such as visible light, ultraviolet, or infrared.

Front

What is amplitude in light waves?

Back

Amplitude refers to the height of the wave from its rest position. In light waves, higher amplitude means brighter light.

Front

How does the type of light affect materials?

Back

Different types of light can cause materials to change in various ways, such as heating them up or changing their color.

Front

What is ultraviolet (UV) light?

Back

Ultraviolet light is a type of electromagnetic radiation with a wavelength shorter than visible light but longer than X-rays. It can cause chemical reactions in materials.

Front

What is the role of energy in light interactions with materials?

Back

Energy from light can be absorbed by materials, causing changes such as heating, melting, or chemical reactions.

Front

Why do some materials change under sunlight but not under artificial light?

Back

Some materials can absorb specific wavelengths of light that are present in sunlight but not in artificial light, leading to changes like melting or drying.

Front

What is the difference between visible light and other types of light?

Back

Visible light is the portion of the electromagnetic spectrum that can be seen by the human eye, while other types, like UV or infrared, are not visible.

Front

How does light from the sun differ from light from a desk lamp?

Back

Light from the sun contains a broader spectrum of wavelengths, including UV light, which can carry more energy compared to the light from a typical desk lamp.

Front

What happens to materials when they absorb light?

Back

When materials absorb light, they can gain energy, which may lead to changes in temperature, state (solid to liquid), or even chemical structure.

Front

What is the significance of light's energy in everyday applications?

Back

The energy carried by light is crucial in applications like photosynthesis, solar energy, and even in everyday items like sunscreen.