Hummingbirds Can Hover Because

question 70

Multiple Choice

Hummingbirds can hover because

• A)they have large breast muscles that enable their wings to generate lift in the upstroke and downstroke.
• B)they burn only sugar and not fat.
• C)their wings beat rapidly,often higher than 30 beats/sec.
• D)A and C

---

Definitions:

Sleepwalking

A sleep disorder causing people to get up and walk around while in a state of sleep.

EEG

Short for electroencephalogram, a test that measures electrical activity in the brain and is used in the diagnosis of neurological conditions.

Delta Waves

Slow brain waves typically associated with the deepest stages of sleep and relaxation.

Latent Content

In psychoanalytic theory, the underlying meaning or symbolic message of a dream, as opposed to its apparent storyline.