Half Life Flashcards
What is half-life?
Half the time it takes for a radiometric isotope to lose half of its value.
What is dew point?
The temperature at which water begins to condense and dew forms.
What is relative humidity?
The amount of water vapor in the air as a percentage of the amount needed for saturation at the same temperature.
Which was the era of the dinosaurs?
Mesozoic
Current era
Anthropocene
How does hail form?
When water droplets freeze and catch other water droplets along the way
Why does perception go towards the ground?
Because the moist air cools and condensation occurs.
How many miles away is the sun?
93,000,000 miles
Lunar eclipse
When the moon passes behind the earths umbra
Solar eclipse
When the sun is obscured by the moon.
What are the order of the planets?
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.
