Chemistry
Optics
Biology
Climate
Alliteration
100

This is the total number of atoms in a molecule of K2CrO4

What is 7?

100

With additive colour theory, all colours can be made from these three primary colours

What are red, blue, and green?

100

The cell theory states that all cells come from this

What are existing cells?

100

Unlike climate which occurs over 30+ years, this describes day-to-day changes

What is weather?

100

These two coordinates can tell you where on earth you are

What are latitude and longitude?

200

This is the chemical formula for dinitrogen trioxide

What is N2O3

200

In a plane mirror, the angle or reflection is equal to this angle

The angle of incidence

200

This organelle provides cells with energy through cellular respiration (powerhouse of the cell)

What are mitochondria?

200

This type of greenhouse gas is used by plants for photosynthesis

What is carbon dioxide?

200

Atoms are made up of positive protons, negative electrons, and these?

What are neutral neutrons?

300

In this type of reaction, one compound is broken apart into multiple atoms/compounds.

What is a decomposition reaction?

300

This type of lightbulb uses 4 times more electricity than fluorescent light bulbs?

What is an incandescent lightbulb?

300

This is anything that causes a change in a cell's DNA

What is a mutagen?

300

In the Northern hemisphere, this is the name for the  longest day of the year

What is the summer solstice?

300

The synthesis reaction Fe + I2 --> FeI2 forms this compound

What is iron iodide? (FeI2)

400

In order to balance the equation HgO --> Hg + O2, these numbers must be added

2 before HgO and 2 before Hg

2HgO --> 2Hg + O2

400

Wavelength and frequency have this type of relationship

What is inversely proportional?

400

In plant cells, a new one of these forms during mitosis, separating the 2 daughter cells.

What is a cell wall?

400

This happens to about 50% of the heat emitted by the sun.

What is being absorbed by land and ocean?

400

This ionic compound is made up of calcium and a halogen (group 17)

What is calcium chloride?

500

In an ionic compound, this is what the positively charged ion is called

What is a cation?

500

Wavelengths that are shorter that infrared, but longer than ultraviolet fall here

What is the visible spectrum?

500

This is the phase of the cell cycle in which centromeres divide, and sister chromatids separate

What is anaphase?

500

This property of a surface describes the proportion of radiation that is reflected.

What is albedo?

500

These two terms refer to light bouncing back the way it came, and light bending

What are reflection and refraction?