WHAT IS EARTH
- Earth is a planet where living organisms exist.
- It is the only planet that is considered habitable. It is located in the goldilocks
zone.
QUESTION: Why do planet Earth belongs to Goldilocks zone? – because it has
enough distance from the sun to prove an average temperature.
FACTORS THAT MAKES PLANET EARTH HABITABLE
Distance from the star
- Distance from the star affects the temperature as it is the one that gives light
energy (sun).
- It affects water to be frozen or liquid.
CONDITION:
Far from the star = low temperature
Near to sun like star= average temperature
Too near to the star = high temperature
Temperature
- The temperature must be in range that could support life.
- Range of humans is to -15C to 115C
- Influences how chemical would react.
CONDITION:
Low temperature = chemicals like atoms and molecules react slowly which results for
interference with reactions necessary for life.
Just enough = water is present. In this temperature, chemicals can break down into
context form
High temperature = chemicals structure are destroyed which results for no
transformation of chemicals into reactions and disruption of specific function.
- Lead to chain reactions of other changes
- Water evaporates due to intense surface temperature.
Mass of a Planet
- The size of the planet affects its gravitational force.
- Gravity helps the planet hold on atmosphere
CONDITION:
Low mass = it won’t have enough gravity, and the atmosphere will be stripped away
Just enough = has enough gravity to hold the atmosphere
High mass = has massive gravity which result for more gravitational pull and
atmosphere.
- It creates more GREENHOUSE GASES than what is needed
QUESTION: What is Greenhouse Gases? – it is a gases in earth’s atmosphere that is
being trap in the sun causing for earth to produce warm weather and heat up. If the
earth’s atmosphere is too thick, the gases cannot escape which results for heat to
build up.
3GENSTER
