Air Mas
A large volume of air that has nearly the same temperature & humidity at different locations at the same altitude .

Barometer
An instrument that measures air pressure in the atmosphere.

Cell
The smallest unit that is able to perform the basic functions of life.

Dew point
The temperature at which air with a given amount of water vapor will reach saturation

Ectotherm
An animal whose body temperature changes with environmental conditions

Force
A push or a pull; something that changes the motion of an object

Gill
A respiratory organ that filters oxygen dissolved in water.

Hail
Layered lumps or balls of ice that falls from cumulonimbus clouds.

Insect
An arthropod with three body segments, six legs, two antennae, and compound eyes.

Jet stream
A wind that flows in the upper troposphere from west to east over vast distance at great speeds.

Kinetic energy
The energy of motion.
A moving object has the most kinetic energy at the point where it moves the fastest.

Lever
A solid bar that rotates, or turns,around a fixed point ; one of the six simple machines.

Machine
Any device that makes doing work easier .

Newtons
The SI unit of force.

Organism
An individual living thing, made up of one or many cells, that is capable of growing and reproducing.

Pollen
Tiny multicellular grains that contain the undeveloped sperm cells of a plant.

Qualitative
Measure by the quality of something rather then quantity .

Reptile
A cold-blooded vertebrate that has skin covered with scales or horny plates and has lungs.

Screw
A simple machine that is an inclined plane wrapped around a cylinder.

Taxonomy
The science of classifying and naming organisms.

Ultraviolet radiation
Radiation of higher frequencies than visible light, which can cause sunburn and other types of damage.

Variable
Any factor that can change in a controlled experiment, observation, or model.

Work
The use of force to move an object over a distance.

X-axis
The horizontal axis system of coordinates .

Y-ACIS

• The vertical axis system of coordinates

Zebra
An African wild horse with black and white stripes.