Question

1. bats, dolphins, and whales use sonar (reflection of sound waves) to find food and to help them \see\. what is this called?
2. which color of light has the highest frequency? the lowest frequency?
3. which color of light has the longest wavelength? the shortest wavelength?
4. what is the range of human hearing? (from what hz to what hz?)
5. of the two kinds of lenses, which one converges (brings together) light? convex
6. of the two kinds of lenses? which one diverges (spreads out) light? concave
7. what is reflection? the bouncing back of light off an object

Explanation:

Question 16

Bats, dolphins, and whales using the reflection of sound waves (sonar) for navigation and finding food is called echolocation. This is a biological and physical concept related to how these animals use sound waves to sense their environment.

In the visible light spectrum, the frequency of light is related to its color. Violet light has the highest frequency, and red light has the lowest frequency. This is based on the electromagnetic spectrum where higher energy (and thus higher frequency) corresponds to shorter wavelengths, and violet is at the higher energy end while red is at the lower energy end for visible light.

Wavelength and frequency are inversely related (since \( c = \lambda f \), where \( c \) is the speed of light, \( \lambda \) is wavelength, and \( f \) is frequency). So, the color with the longest wavelength will have the lowest frequency and vice versa. Red light has the longest wavelength, and violet light has the shortest wavelength in the visible spectrum.

Answer:

Echolocation

Question 17