Biology
Chemistry
Physics
Earth and Space Science
100

This process involves the division of the cell's nucleus, resulting in two identical daughter cells.

mitosis

100

 These are the rows in the periodic table that indicate the number of electron shells an atom has.

periods

100

The range of electromagnetic radiation that is visible to the human eye.

 visible light

100

 This is a gas produced by livestock and agriculture that contributes significantly to the greenhouse effect.

 methane (CH4)

200

This gas is a product of photosynthesis and is essential for respiration in animals

 oxygen

200

A solution with a pH less than 7 is considered this

acidic

200

 The bending of light as it passes from one medium to another.

refraction

200

This is a type of renewable energy that harnesses the power of moving air to generate electricity.

wind energy

300

This process, occurring in the mitochondria, uses glucose and oxygen to produce ATP.

cellular respiration

300

A substance that increases the rate of a chemical reaction without being consumed in the reaction.

catalyst

300

An optical instrument that uses lenses to make distant objects appear closer.

telescope

300

This is the process by which plants absorb carbon dioxide from the atmosphere.

photosynthesis

400

The phase of mitosis where sister chromatids are separated and pulled to opposite poles of the cell.

anaphase

400

The type of chemical bond formed by the sharing of electrons between atoms.

a covalent bond

400

This part of the eye focuses light onto the retina.

the lens

400

 This is the term for the long-term change in average weather patterns that has come to define the warming of the planet.


 climate change

500

These are the repeating units that make up a DNA molecule, consisting of a sugar, phosphate, and a nitrogenous base.

nucleotides

500

This is the smallest particle of an element that can participate in a chemical reaction

atom

500

 This type of lens is thicker in the middle and bends light rays to converge at a point.

a convex lens

500

This is the term for the rising of the global average sea level, primarily caused by thermal expansion and melting ice

sea level rise

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