Biology
The basic unit of life.
Cell
The chemical formula for table salt.
NaCl
The force that acts on objects in free fall.
Gravity
The phenomenon caused by the trapping of heat in Earth's atmosphere by greenhouse gases.
The greenhouse effect
This scientist developed the theory of evolution by natural selection.
Charles Darwin
The theory that species evolve over time through natural selection.
Evolution
The pH level of a neutral solution.
7
The device used to measure electric voltage.
Voltmeter
The largest ocean on Earth.
The Pacific Ocean
The scientist who formulated the laws of motion and universal gravitation.
Isaac Newton
This process converts sunlight into chemical energy in plants.
Photosynthesis
This element is the main component of steel.
Iron
This is the force that opposes the motion of objects through the air
Air resistance
The process by which water vapor turns into liquid water.
Condensation
This scientist developed the theory of general relativity
Albert Einstein
The molecule that carries genetic information.
DNA
The number of valence electrons in a carbon atom.
4
This is the rate of change of velocity of an object.
Acceleration
The layer of Earth located between the crust and the core.
The mantle
Who created the periodic table?
Dmitri Mendeleev
The type of cell division that results in two daughter cells with the same number of chromosomes as the parent cell.
Mitosis
This type of bond involves the sharing of electron pairs between atoms.
Covalent bond
The type of energy in the heating of soup or melting of ice cream.
Thermal
The scale used to measure the magnitude of earthquakes.
The Richter scale
This scientist is famous for her research on radioactivity and was the first woman to win a Nobel Prize.
Marie Curie