Abiotic vs. Biotic Factors
This term describes the living parts of an ecosystem, such as plants, animals, and bacteria.
What is a biotic factor?
In the chemical formula for water, H₂O, this is the total number of hydrogen atoms.
What is 2?
Cutting a piece of paper, melting an ice cube, or breaking a glowstick without activating it are all examples of this type of change.
What is a physical change?
The formula used to calculate speed is this divided by time.
What is distance?
Thermal energy always moves from an object with a ________ temperature to an object with a ________ temperature.
What is higher (hotter) to lower (colder)?
Deer, rabbits, and shrubs in a Texas Hill Country ecosystem all compete for this vital, non-living liquid abiotic factor.
What is water?
The small number written below and to the right of a chemical symbol that tells you how many atoms of that element are present.
What is a subscript?
This type of change occurs when substances react to form entirely new substances with different properties.
What is a chemical change?
A truck travels at 65 miles per hour." This statement describes the truck's _______.
What is speed?
This method of heat transfer happens through direct touch, like burning your hand on a hot metal spoon.
What is conduction?
This primary abiotic factor provides the initial energy source for almost all food webs on Earth.
What is the Sun?
How many total atoms are inside a single molecule of carbon dioxide (CO₂)?
What is 3?
If you mix baking soda and vinegar, it quickly begins to fizz and bubble. This production of gas is evidence of what?
What is a chemical change?
Unlike speed, velocity must always include this extra piece of information.
What is direction?
This method of heat transfer travels through empty space in waves, which is how the sun warms up the Earth.
What is radiation?
If a wildfire sweeps through a piney woods forest in East Texas, the burned, dead trees are still considered this type of factor.
What is a biotic factor?
Look at the formula for Rust: Fe₂O₃. Name the two elements present and how many atoms there are of each.
What is Iron (2) and Oygen (3)
Name two pieces of evidence that prove a chemical change has occurred when campfire wood turns to ash.
What are production of light, release of heat, color change, or production of gas/smoke?
A Mexican Free-tailed bat flies 60 meters in 3 seconds. Calculate its average speed.
What is 20 meters per second (m/s)?
This type of thermal transfer creates currents in liquids and gases because warm, less dense fluids rise, and cool, denser fluids sink.
What is convection?
Name three specific abiotic factors that plants in a desert ecosystem must compete for or adapt to survive.
What are sunlight, water, soil composition, or temperature?
Calculate the total number of atoms in a molecule of glucose, which has the chemical formula C₆H₁₂O₆.
What is 24?
When water boils on a stove and turns into steam, it is a physical change because of this reason.
What is it is still water ($H_2O$), just in a different state of matter?
Identify which of these is a velocity: "25 m/s" or "25 m/s North."
What is 25 m/s North?
Standing near a hot Texas asphalt road feels warm because of radiation, but walking barefoot on it burns your feet because of this.
What is conduction?