Water Cycle
Earth, Moon, and Sun
Rotation and Revolution
Food Webs
Carbon Dioxide and Oxygen Cycle
100
The changes to water when it evaporates into the air, condenses into clouds, and then precipitates back down to the Earth’s surface.
What is the water cycle?
100
Both of these have a solid surface.
What is the moon and earth?
100
A line, real or imaginary, around which something spins.
What is an axis?
100
This source gives energy to all food chains and food webs.
What is the sun?
100
A gas produced by plants during photosynthesis that animals and humans use for breathing.
What is oxygen?
200
Physical change in matter from a liquid to a gas.
What is evaporation?
200
This is a ball of flaming, exploding gases with no real surface.
What is the Sun?
200
A 24-hour period, or, the time it takes the Earth to make one complete spin on its axis.
What is rotation?
200
The three different parts of a food web.
What are producers, consumers and decomposers?
200
A gas produced by animals during breathing that plants use to make food, water, and oxygen.
What is carbon dioxide?
300
Physical change in matter from a gas to a liquid.
What is condensation?
300
This has water and an atmosphere of gases that gives life to plants, animals, and people.
What is the Earth?
300
365 days, or, the time it take the Earth to make a complete orbit around the sun.
What is a revolution?
300
A connection of food chains with many food energy paths in an ecosystem.
What is a food web?
300
The gas plants take in to produce sugars through photosynthesis.
What is carbon dioxide?
400
Rain, snow, sleet or hail that falls from clouds in the sky.
What is precipitation?
400
Erosion does not happen here because there is no wind or rain.
What is the moon?
400
This occurs every 24 hours due to the rotation of the Earth.
What is the day and night cycle?
400
The path of food energy from one organism to another in an ecosystem.
What is a food chain?
400
The process where plants use sunlight, water, and carbon dioxide to produce sugar and release oxygen.
What is photosynthesis?
500
This provides the energy that evaporates water on Earth.
What is the Sun?
500
The moon revolves around the Earth. The Earth revolves around the sun. This forces keeps them in orbit.
What is gravity?
500
This appears to move across the sky each day due to the rotation of the Earth.
What is the Sun?
500
This breaks down organic wastes and dead organisms.
What is a decomposer?
500
The movement of carbon on Earth by the processes of breathing and photosynthesis.
What is the carbon cycle?
M
e
n
u