How many kilometers away can other elephants hear the very low-pitched sounds that elephants make?
7.5 km
Which animal mentioned in the text uses very high-pitched sounds that we cannot hear?
bats
Give an example of a sound that has a very low-pitched sound.
good job.
What piece of equipment is used to measure sound volume?
sound level meter
What is the unit used to measure the volume of sound?
decibel
What is the volume of a sound?
loudness
How does sound travel from its source to our ears?
waves or by vibration
What causes sound to be produced?
vibration
How are seeds typically dispersed by animals?
by eating or by stuck
Give an example of a seed that is dispersed by wind and describe its feature that helps this.
parachute or wing
What is seed dispersal, and why is it important for the plant?
spread
When a seed starts to grow, what does it use for energy?
food store
What is germination?
growing
Why do flowers that are pollinated by insects often have bright colors and scent, while flowers pollinated by wind do not?
attract
Describe the two main ways that pollen can be moved from the stamen to the stigma.
by insects and wind
Define pollination.
transfer
