
7.9C Life and Earth Flashcard
Flashcard
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Science
•
7th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the habitable zone in our solar system?
Back
The habitable zone, also known as the Goldilocks zone, is the region around a star where conditions are just right for liquid water to exist on a planet's surface, making it possible for life as we know it. In our solar system, Earth and Mars are considered to be in the habitable zone.
2.
FLASHCARD QUESTION
Front
Which planets are in the habitable zone of our solar system?
Back
Earth and Mars are the two planets in our solar system's habitable zone.
3.
FLASHCARD QUESTION
Front
What are the basic requirements for life on Earth?
Back
The basic requirements for life on Earth include oxygen, water, and an energy source.
4.
FLASHCARD QUESTION
Front
Why is water essential for life?
Back
Water is essential for life because it is a solvent that facilitates chemical reactions, helps regulate temperature, and is necessary for the transport of nutrients and waste in living organisms.
5.
FLASHCARD QUESTION
Front
What role does oxygen play in supporting life?
Back
Oxygen is crucial for the process of cellular respiration, which allows organisms to convert food into energy.
6.
FLASHCARD QUESTION
Front
What is an energy source for living organisms?
Back
An energy source for living organisms can be sunlight (for plants through photosynthesis), food (for animals), or chemical energy stored in molecules.
7.
FLASHCARD QUESTION
Front
What is photosynthesis?
Back
Photosynthesis is the process by which green plants, algae, and some bacteria convert light energy into chemical energy, using carbon dioxide and water to produce glucose and oxygen.
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