In addition to a direct, unblocked path between the object and your eye, this is needed to see an object.
What is light?
The average monthly temperature and amount of precipitation as measured over a long period of time (at least 30 years).
What is climate?
The third planet from the Sun in our solar system.
What is the Earth?
The basic unit of structure and function in living things.
What is a cell?
This is what you see when equal amounts of red, green, and blue light are mixed together.
What is white light?
One molecule transferring kinetic energy to another molecule that it touches.
What is conduction?
When the Earth blocks the Sun's rays from hitting the Moon.
What is a lunar eclipse?
Organisms that are made up of multiple cells with different functions working together.
What is a multi-cellular organism?
The only other thing that can happen to light when it hits an object besides scattering, reflection or transmission.
What is absorption?
Weather condition that depends on the weight/density of the air.
What is air pressure?
The moon phase when no light is reflected to the Earth from the Moon.
What is a new moon?
What is a mitochondrion?
You can see this when green light interacts with a red object.
What is nothing (or black)?
When the amount of reflected light from the Moon is increasing and is close to a full moon.
What is a waxing gibbous moon?
The organelle responsible for turning energy into food in some cells.
They have longer wavelengths than infrared light but higher frequencies than radio waves.
What are microwaves?
This causes the Sun's intensity to vary seasonally at different latitudes.
What is the tilt of Earth's axis?
Fourth largest planet in our solar system as measured by diameter.
What is Neptune?
A type of cell in the human body that does not have a nucleus.
What is a human red blood cell?