Atomic Structure
Ecosystems
Chemical Reactions
Cells
Astronomy
100

This negativly charged particle is found orbiting the nucleous. 

What is an electron?

100

This term describes organisms that can make their own food and make the base of the food chain.

What is a producer?

100

This type of change often results in different substances being produced, and often cannot be undone. 

What is a chemical change?

100

This proccess breaks down sugar to produce CO2, H2O, and ATP.

What is cellular respiration?

100

This rare astronomical event is characterized by a darkness during the day, attracting many spectators to the umbra. 

What is a solar eclipse?

200

This element, which is the smallest in the universe, is also the most abundant.

What is hydrogen?

200

This type of consumer has no predators, meaning the sit on top of the food chain.

What is an apex predator?

200
Many chemical reactions start with two liquids and produce a solid when mixed. The solid is called this.

What is a precipitate?

200

Plants produce this during photosynthesis, its chemical formula being C6H12O6.

What is glucose?

200

A lunar eclipse only occurs during this moon phase.

What is a full moon?

300
An element is determined by this number, which also is the number of protons in an atom. 

What is the atomic number?

300

This biome is defined by being in northern latitudes with prodominantly coniferous trees.

What is a taiga or boreal forest?

300

This corrosive substance loses a hydrogen ion in water and at high concentrations can eat through organic matter or even metal. 

What is an acid?

300

DNA, the code to life, is contained in this organelle.

What is the nucleus?

300

When the northern hemishphere is tilted toward the sun, we are in this season.

What is summer?

400

Named this scientist, this atomic model, which is the most commonly used today, includes a nucleous with protons and neutrons, and electrons at different energy levels. 

What is the Bohr model?

400

Antartica is the largest example of this biome, which is often defined as a region that recieves 10 or fewer inches of rain per year. 

What is a desert?

400

A reaction that releases energy, such as heat, is called this.

What is exothermic?

400

Four of the five kingdoms of life are described as eukaryotic cells. Only one kingdom is described as this kingdom.

What are prokaryotes?

400

Around march 21st every year, there are equal amounts of daylight and nighttime. This day is know as this.

What is the vernal equinox?

500

This is the name for different atoms of the same element having varying numbers of neutrons. 

What are isotopes?

500

There are 5 kingdoms of life, including bacteria, animals, plants, fungi, and this group. 

What are protozoa?

500

Cl- + AgNO3 --> AgCl + NO3- is an example of this type of reaction.

What is a single replacement reaction?

500

This process, also called cell division, occurs to split one cell into two daughter cells.

What is mitosis?

500

The first law of planetary motion describes this shape of the orbit around the sun.

What is an ellipse?