Moon
El Niño
Climate Change
Rain
Riddles
100

It's what we call the Moon when it's fully illuminated, so the dark part of it does not appear to an observer on Earth.

What is a Full Moon?
100

They are a continuous and predictable movement of water, driven usually by the main Earth's winds.

What are ocean currents?

100

It's what is happening to the ice on the poles, verified by evidence of analyzing trends of long-term measures, graphed over time.

What is melting?

100

It's the process of turning vapor/gas into a liquid.

What is condensation?

100

You can see me in water,
but I never get wet.

Reflection

200

It's the phase of the Moon in which the dark part is bigger than the light part.

What is a Crescent Moon?

200

It's the region of Earth that receives the greatest amount of sunlight, resulting in higher temperatures for the places in this region.

What is the Equator?

200

It's a process in which a substance reacts rapidly with oxygen, gives off energy, and produces carbon dioxide.

What is combustion?

200

It's the process of turning into a liquid into vapor/gas.

What is evaporation?

200

I'm a word that starts with "e" and ends with "e", but only have one letter in it.

Envelope

300

It's the border between the light and dark parts of the Moon.

What is the terminator?

300

It's a term used while studying El Niño to encompass land and water since both of them can give energy to the air.

What is surface?

300

It's considered a greenhouse gas because it traps the energy that is coming out of the Earth, so it stays in and results in an increase of global temperature.

What is carbon dioxide (CO2)?

(also accept methane)

300

It's the process of liquid water falling back onto the surface from clouds.

What is precipitation?

300

A word I know,
six letters it contains
subtract just one,
and twelve is what remains.

Dozens
400

It's the only phase of the Moon in which a Lunar Eclipse can happen.

What is a Full Moon?

400

They are the main winds on Earth, which are affected by El Niño, and are responsible for defining the directions of the ocean currents.

What are the Prevailing Winds?

400

It's a process of taking some gases produced in industries and power plants and storing it underground.

What is Gas Capture?

400

It's one of the factors that can increase the amount of rain, besides sunlight and surface water, because it can cause the clouds to move up higher.

What is wind?

400

Always old, sometimes new.
Never sad, sometimes blue.
Never empty, sometimes full.
Never pushing, always pulling.

The Moon

500

It's the number of times per year that we can see a Lunar Eclipse from Earth.

What is two?

500
It's what happens to the ocean currents and winds on Earth during El Niño.

What is slow down?
(also accept weaken (or anything similar) and reverse) 

500

It's a gas that reflects the energy coming into the Earth back to space, causing the global temperature to decrease.

What is Sulfur Dioxide?

500

It's what happens to the energy of a parcel of water vapor for it to become a cloud.

What is release??
(also accept lose, get lower, or anything similar)

500

I can be quick and then I'm deadly,
I am a rock, shell and bone medley.
If I was made into a man, I'd make people dream,
I gather in my millions by ocean, sea and stream.

Sand