Chemistry
This positively charged particle determines the identity of an element.
What is the proton?
This organelle contains its own DNA and is responsible for most ATP production in eukaryotic cells.
What is the mitochondrion?
This vector quantity is conserved in isolated systems and equals mass multiplied by velocity.
What is momentum?
This object accounts for more than 99% of the mass in our solar system.
What is the Sun?
This irrational number represents the ratio of a circle’s circumference to its diameter.
What is pi (π)?
This type of bond results from the electrostatic attraction between oppositely charged ions after electron transfer.
What is an ionic bond?
These macromolecules are polymers of amino acids linked by peptide bonds.
What are proteins?
This law of motion explains why forces always occur in interacting pairs.
What is Newton’s Third Law of Motion?
This gas giant is classified as a ringed planet composed primarily of hydrogen and helium.
What is Saturn?
This type of graph is most appropriate for showing continuous change over time.
What is a line graph?
This law explains why balanced chemical equations must have equal numbers of each atom on both sides.
What is the law of conservation of mass?
This light-dependent process produces ATP and NADPH in photosynthesis.
What are the light-dependent reactions?
This form of energy depends on position within a force field, such as gravitational or electric fields.
What is potential energy?
This stellar explosion can briefly outshine an entire galaxy.
What is a supernova?
This mathematical concept describes deterministic systems that are highly sensitive to initial conditions.
What is chaos theory?
This quantitative measure describes how much solute is present per unit volume of solution.
What is molarity?
This system transports oxygen, nutrients, hormones, and metabolic waste throughout the body.
What is the circulatory system?
This SI unit measures electric current as charge per unit time.
What is the ampere (amp)?
This theoretical boundary marks the point of no return around a black hole.
What is the event horizon?
This physicist formulated the laws of motion and universal gravitation.
Who is Isaac Newton?
This thermodynamic quantity is negative for exothermic reactions and positive for endothermic reactions.
What is enthalpy change (ΔH)?
This level of biological organization includes both biotic and abiotic factors interacting as a system.
What is an ecosystem?
This relativistic effect causes moving clocks to run slower relative to stationary observers.
What is time dilation?
This faint radiation at about 2.7 K is considered remnant heat from the early universe.
What is cosmic microwave background radiation?
This field studies matter and devices at the scale of atoms and molecules, typically below 100 nanometers.
What is nanotechnology?