🧬 Life Systems
This organelle is known as the powerhouse of the cell because it generates most of the cell's supply of ATP.
What is the mitochondria?
The center of an atom, containing protons and neutrons.
What is the nucleus?
The invisible force that pulls objects toward each other, keeping us on the ground.
What is gravity?
The rigid outer part of the earth, consisting of the crust and upper mantle, broken into tectonic plates.
What is the lithosphere?
An educated guess or testable prediction made before starting an experiment.
What is a hypothesis?
The process by which plants convert sunlight, water, and carbon dioxide into oxygen and glucose.
What is photosynthesis?
The negatively charged particle that orbits the center of an atom.
What is an electron?
Energy that an object possesses due to its motion.
What is kinetic energy?
The gradual increase in the overall temperature of the earth's atmosphere generally attributed to the greenhouse effect.
What is global warming (or climate change)?
The variable in an experiment that the scientist purposefully changes or manipulates.
What is the independent variable?
This molecule carries the genetic instructions for life and is structured as a double helix.
What is DNA?
This type of chemical bond involves the sharing of electron pairs between atoms.
What is a covalent bond?
Newton's Third Law states that for every action, there is an equal and opposite this.
What is reaction?
The process by which rocks are broken down into smaller pieces by wind, water, or temperature changes.
What is weathering?
The group in an experiment that does not receive the experimental treatment, used as a baseline for comparison.
What is the control group?
The mechanism of evolution proposed by Charles Darwin, where organisms better adapted to their environment tend to survive and produce more offspring.
What is natural selection?
The law stating that matter cannot be created or destroyed in an isolated system.
What is the Law of Conservation of Mass?
The rate at which an object changes its velocity over time.
What is acceleration?
The boundary where two tectonic plates are moving away from each other, often forming mid-ocean ridges.
What is a divergent boundary?
This type of graph is best used to show how a part relates to the whole.
What is a pie chart?
In an ecosystem, this term describes the complex network of intersecting and overlapping food chains.
What is a food web?
A substance that increases the rate of a chemical reaction without undergoing any permanent chemical change itself.
What is a catalyst?
The transfer of heat through a fluid, such as a liquid or gas, caused by molecular motion.
What is convection?
The scientific theory explaining the origin of the universe, suggesting it expanded from a high-density and high-temperature state.
What is the Big Bang Theory?
A logical conclusion drawn from available evidence and prior knowledge, rather than direct observation.
What is an inference?