Collisions Between Galaxies

question 52

Multiple Choice

Collisions between galaxies

• A) cause large numbers of stars to collide and explode.
• B) are the best explanation for gamma- ray burst events.
• C) cause the gas and dust clouds to collide, leading to rapid star formation.
• D) are much rarer than collisions between stars.
• E) can turn elliptical galaxies into spirals.

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Definitions:

Insomnia

The inability to get to sleep, stay asleep, or get a good quality of sleep.

Total Amount

Refers to the complete or whole quantity or sum of all parts or elements within a set or group.

Sleep

A naturally recurring state of mind and body characterized by altered consciousness, reduced sensory activity, and inhibited voluntary muscle activity.

Non-REM (N) Sleep

A phase of sleep that excludes REM sleep, characterized by slower brain waves, reduced heart rate, and lower body temperature.