An area of land that accumulates precipitation and drains it into one larger body of water.
What is a watershed?
A living part of an ecosystem is called this.
What is a biotic factor?
This is a surface force that resists motion between two touching surfaces.
What is friction?
This part of an experiment is the factor that is changed on purpose.
What is the independent variable?
The number of meters in 3,500 centimeters.
What is 35 meters?
A body of water where freshwater and saltwater meet.
What is an estuary?
The opposite process of photosynthesis-- Living things take in oxygen and glucose for energy, and produce carbon dioxide and water as a result.
What is cellular respiration?
Sound travels fastest in this medium.
What is a solid?
The instrument used to measure mass AND the SI unit of measurement for mass.
What is a triple beam balance and grams?
Sound waves need this to travel, while EM waves do not.
What is a medium?
What type of weather is typically associated with this weather symbol?![]()
What is stormy or inclimate weather (rain, storms, cloudy, cool)?

In this food chain, the grass would be considered this.
What is a producer OR abiotic factor?
This will happen to the wavelength of the wave shown above.
What is wavelength increases?
Name two nonrenewable energy sources.
What are coal, oil, or natural gas?
The speed of a dog that runs 300 m in 30 seconds.
What is 10 m/s?
The outer planets of the solar system can be categorized based on this.
What is their gaseous composition (gas giants)?
1. The genetic make-up of an organism (its alleles)
2. The organism's physical appearance
What is
1. Genotype
2. Phenotype
An object in motion will stay in motion, and an object at rest will stay at rest according to this scientific law.
What is Newton's 1st law (law of inertia)?
This states that matter cannot be created nor destroyed.
What is the Law of Conservation of Matter?
A symbiotic relationship in which one organism benefits and the other organism is harmed.
What is parasitism?
What is the universal solvent?
List the levels of cellular organization from least to most complex.
What is
cell ---> tissue ---> organ ---> organ system ---> organism?
Balance this chemical equation:
N2 + H2 ----> NH3
What is
1N2 + 3H2 ----> 2NH3
One of these describes why something happens, while the other describes what happens.
What is a scientific theory and a scientific law?
Name the six simple machines.
What are inclined plane, pulley, wheel & axle, lever, screw, and wedge?