Chemistry
This type of bond involves the sharing of electrons between atoms.
What is a covalent bond?
This organelle is known as the "powerhouse" of the cell.
What is the mitochondrion?
This type of mirror curves inward like a cave.
What is a concave mirror?
This term describes the gradual increase in Earth's average temperature over time.
What is global warming?
This is the pH value of a neutral substance like pure water.
What is 7?
This green pigment in plants captures light energy for photosynthesis.
What is chlorophyll?
This is the bending of light as it passes from one medium to another.
What is refraction?
These gases, including carbon dioxide and methane, trap heat in Earth’s atmosphere.
What are greenhouse gases?
This gas is released when an acid reacts with a metal like zinc.
What is hydrogen gas?
This system in the human body transports oxygen and nutrients through the blood.
What is the circulatory system?
This part of the eye focuses light onto the retina.
What is the lens?
This international agreement, signed in 2015, aims to limit global warming to well below 2°C.
What is the Paris Agreement?
This periodic table group contains highly reactive metals like sodium and potassium.
What are alkali metals?
This molecule carries genetic information.
What is DNA?
This lens shape causes light rays to converge to a focal point.
What is a convex lens?
The melting of these large ice formations contributes to rising sea levels.
What are glaciers (or ice sheets)?
The law that states matter cannot be created or destroyed in a chemical reaction.
What is the Law of Conservation of Mass?
The phase of mitosis where chromosomes line up in the middle of the cell.
What is metaphase?
The point where light rays meet after passing through a converging lens.
What is the focal point?
This process occurs when oceans absorb excess CO₂, causing harm to marine life.
What is ocean acidification?