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Answer: Lever
A lever is a simple machine that uses a fulcrum to lift or move objects with less effort.
Answer: Carbon dioxide
Carbon dioxide (CO2) is the primary greenhouse gas responsible for trapping heat in Earths atmosphere, contributing to global warming.
Answer: Uranium
Uranium is the heaviest naturally occurring element, with an atomic number of 92 and an atomic mass of around 238.
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Answer: NaCl
Sodium chloride (NaCl) is the chemical name for common table salt, composed of sodium (Na) and chlorine (Cl).
Answer: Evaporation
Evaporation is the process by which a liquid changes into a gas, often due to heat, like water turning into vapor.
Answer: Potential energy
A stretched rubber band stores potential energy, which is released when it returns to its original shape.
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Answer: Photosynthesis
Photosynthesis is the process by which plants use sunlight, carbon dioxide and water to produce food (glucose) and oxygen.
Answer: Covalent bond
A covalent bond is formed when atoms share electrons, as seen in molecules like water (H2O) or oxygen (O2).
Answer: Freezing
Freezing is the process where a liquid turns into a solid as its temperature drops below its freezing point.
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Answer: A pond
An ecosystem is a community of living organisms interacting with their environment, such as a pond that includes fish, plants and microorganisms.
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