Sonar is a system that locates objects by transmitting sound waves and detecting the waves when they are reflected off of objects. Bats and many other animals, such as whales and dolphins, use natural sonar to navigate and capture
it is called ecolocation they use it to locate prey
dopler
reflection
Opaque
Something called echo-location
Scientists that unearth and interpret objects from past societies are called archaeologists.
its called echolocation or sonar. bats do it and so do dolphins
its called echolocation or sonar. bats do it and so do dolphins
echolocation
the substances that are called opaque reflect light by whch they gain colour
Brown objects reflect som light in the yellowish/orangish part of the spectrum. "dirty" orange is called "brown".
a group of dolphins is called a school of dolphins.
Reflectivity, index of refraction and optical density are all ways to measure reflective light.
They find their way by sending out high-pitched sounds (at a level too high for humans to hear). The dolphins then listen for the returning echoes as they bounce off objects. This is called "echolocation", and it lets dolphins know what is around them.