Biology
This green pigment, found in chloroplasts, is essential for absorbing light energy during photosynthesis.
Chlorophyll
This subatomic particle has a relative charge of -1 and a negligible mass.
Electron
This is the unit used to measure electrical resistance.
Ohms
This gas makes up approximately 78% of the Earth's atmosphere.
Nitrogen
This is the name of our home galaxy, which is a spiral galaxy containing billions of stars.
The Milky Way
These microscopic, finger-like projections in the small intestine increase the surface area for nutrient absorption.
Villi
This type of chemical bond involves the sharing of electron pairs between two non-metal atoms.
Covalent Bond
Defined as "extension is directly proportional to load," provided the limit of proportionality is not exceeded.
Hooke’s Law
These are the three main types of rocks found in the Earth's crust: Igneous, Sedimentary, and this third type formed by heat and pressure.
Metamorphic
This is the average distance from the Earth to the Sun, approximately 150 million kilometers.
1 Astronomical Unit (AU)
This term describes the movement of water molecules from a region of higher water potential to lower water potential through a partially permeable membrane.
Osmosis
In the Periodic Table, elements in this vertical column are known as the Halogens.
Group 7 (or 17)
This type of electromagnetic wave has the longest wavelength and the lowest frequency in the spectrum.
Radio waves
This "effect" occurs when gases like methane and carbon dioxide trap heat in the atmosphere, leading to global warming.
Greenhouse Effect
This force is responsible for keeping planets in orbit around the Sun and moons in orbit around planets.
Gravitational force
In the heart, these specific blood vessels carry oxygenated blood away from the left ventricle to the rest of the body.
Aorta
This is the name given to a substance that increases the rate of a chemical reaction without being used up itself.
Catalyst
Calculated as mass multiplied by gravitational field strength (W = mg), this is the force acting on an object due to gravity.
Weight
This is the process by which liquid water turns into water vapor from the surface of oceans and lakes.
Evaporation
A stable star, like our Sun, is in this stage of its life cycle when the inward force of gravity is balanced by the outward pressure of fusion.
Main Sequence
This specific type of cell division results in four genetically different haploid daughter cells, used for the production of gametes.
Meiosis
Calculate the number of moles in 88g of carbon dioxide (CO2). (Relative atomic masses: C=12, O=16).
2 moles
This phenomenon occurs when light travels from a more dense to a less dense medium at an angle of incidence greater than the critical angle.
Total Internal Reflection
In the carbon cycle, this is the only natural process that actively removes carbon dioxide from the atmosphere.
Photosynthesis
This term describes the observed increase in the wavelength of light from distant galaxies, providing evidence that the universe is expanding.
Redshift