Biology
This organ pumps blood around the body.
What is a heart?
This subatomic particle has a positive charge.
What is a proton?
This is the force that pulls objects towards Earth.
What is gravity?
This planet is the Red Planet.
What is Mars?
This variable measured in an experiment.
What is the dependent variable?
This part of the cell contains genetic information.
What is a nucleus?
**accept "DNA"
This is the simplest type of substance, made of only one type of atom.
What is an element?
This is the unit of force.
What is a Newton?
This type of rock forms from cooled magma.
What is igneous rock?
This is consistency of results.
What is reliability?
This is the main energy source for most ecosystems.
What is the Sun?
This type of bond forms when atoms share electrons.
What is a covalent bond?
This type of circuit stops working if one bulb blows.
What is a series circuit?
This theory explains moving continents.
What is plate tectonics?
This is the type of graph used to show relationships between two continuous variables.
What is a line graph?
This human activity disrupts carbon and nitrogen cycles.
What is deforestation?
This is the energy barrier that must be overcome for a reaction to occur.
What is activation energy?
This is the property of objects to stay in motion unless acted on.
What is inertia?
This is the factor responsible for the difference in climate between the equator and the poles.
What is the tilt of Earth’s axis?
A student times a pendulum swing 10 times and gets an average of 2.1 s. The expected value is 2.0 s. This is the percentage error.
What is 5%?
This is the organelle in plant cells that converts light energy into chemical energy.
What is a chloroplast?
This is the process by which unstable isotopes break down.
What is radioactive decay?
This law states “for every action there is an equal and opposite reaction.”
What is Newton’s Third Law?
This is the leftover radiation from the Big Bang that supports cosmological theory.
What is cosmic microwave background radiation?
A student uses a ruler with millimeter markings to measure length. This is the precision of their measurement.
What is ±0.1 cm (or ±1 mm)?