Wavelength and Energy

Which color has the lowest energy?

• Blue

• Green

• Orange

• Red

Order the following colors from lowest to highest energy.

• Red

• Yellow

• Violet

• Blue

• Orange

As the wavelength increases, the number of waves decreases. The number of waves per unit of time is also known as ​ (a)  

• frequency
• wavelength
• energy

A wave with 400 nm of wavelength has ​ (a)   energy than a wave with a wavelength of 700 nm

• higher
• lower
• the same

When waves are close to each other, they have ​ (a)   wavelengths and ​ (b)   energy.

• shorter
• higher
• longer
• lower