The central organelle within the animal and plant cell, which controls all functions of the cell.
What is the nucleus?
100
The tendency of an object to resist a change in motion.
What is inertia?
100
The organization of all of the elements, together in a visual representation.
What is the periodic table?
100
The outermost layer of Earth.
What is the crust?
100
This instrument is used to measure pressure.
What is a barometer?
200
The collection of all species of living things within a given ecosystem.
What is a community?
200
This scientist was one of the first to heavily use the scientific method, and challenged views of our solar system that had been popular for 2,000 years.
Who is Galileo?
200
Two or more elements bound together.
What is a molecule?
200
The pattern of orbit that planets follow in our solar system.
What is elliptical?
200
The type of shine that a mineral has.
What is luster?
300
A process that results in increased variation of traits among offspring.
What is sexual reproduction?
300
A force that will always be in the opposite direction of motion.
What is friction?
300
The only metal that is a liquid at room temperature, also known as quicksilver.
What is mercury?
300
This collection of rocks exists between Mars and Jupiter.
What is the asteroid belt?
300
Scientists classify these based on yearly temperature patterns and precipitation.
What are climate types?
400
A type of seed that uses hooked barbs to latch on to animal fur as a means of travel.
What is a burr?
400
Aristotle and Ptolemy both thought that our solar system was this.
What is geocentric?
400
This type of liquid has a pH value of 6.9 or lower.
What is an acid?
400
These large sections of the Earth's crust are what caused continental drift, and broke up Pangaea.
What are tectonic plates?
400
Humus, a major component of topsoil, is mostly composed of this.
What is dead organic material?
500
Multiple cells of the same type cling together to make this structure, which will later compound to make an organ.
What is a tissue?
500
This force acts against gravity, when one object is resting atop another.
What is the normal force?
500
In a chemical equation, the arrow represents this.
What is energy?
500
The only liquid layer of Earth's interior.
What is the outer core?
500
Deposits of this soft stone usually lead to cave formation, once it is worn away by water.