When a species completely dies out, it is said to be ___________.
Extinct
100
Animals without backbones are called ____________.
Invertebrates
200
What is the difference between a hypothesis and an inference?
Hypothesis-- a proposed solution to a scientific problem (BEFORE any observations have been made).
Inference-- a possible explanation for an observation (AFTER observations have been made-- saying why something is the way it is).
200
Deceleration is ______________________.
negative acceleration.
200
What is the producer in this food chain?
Grass --> Rabbit --> Snake
Grass (produces its own food).
200
Seed plants avoid overcrowding by _____________________.
Seed dispersal.
200
Explain the 3 rules for writing a scientific name.
1. Capitalize the genus (first word)
2. Do not capitalize the species (second word)
3. Underline or italicize the entire name
300
Kiloliters are used to measure _____________.
volume (of a large amount of liquid).
300
Lubricants are used to _____________ the friction between two objects.
decrease
300
Barnacles living on whales without causing harm is an example of _______________.
Commensalism
300
What is the name of the "level" that makes up the living parts and the nonliving parts of an environment?
Ecosystem
300
Explain Darwin's theory of natural selection.
Those organisms that are better suited for their environment will have a better chance at survival and thus reproduction. (Survival of the fittest).
400
Quantitative or Qualitative observation?
The book has fifteen chapters.
Quantitative (#s!)
400
What are the three types of friction and give an example of each.
SLIDING -- walking
ROLLING -- bowling
FLUID -- sky-diving
400
A person's skeleton is called a(n) _________________.
ENDOskeleton
400
The pH scale (used to measure the acidity of water) goes from number 1 to number ______.
14
400
The passage of an animal through several different stages of life is called _____________.
Metamorphosis
500
What is the difference between weight and mass.
WEIGHT- the measure of gravitational pull on an object. (Force measured in Newtons).
MASS- the amount of matter in an object. (measured in grams).
500
What is the deceleration of a boat slowing from 60 m/s to 0 m/s in 3 seconds?
-20 m/s/s
500
Name the "4 ingredients" that plants need to make their own food.
Sun, water, carbon dioxide, chlorophyll
500
Explain the difference between scavengers and decomposers.
Scavengers eat the "left-overs" (dead organisms).
Decomposers break down the remains of dead organisms AND return the nutrients to the soil.
500
Water and minerals are carried to the leaves of a vascular plant by its ______________.