Q.1
A seesaw is an example of which machine?
  • wedge
  • lever
  • inclined plane
  • pulley
Q.2
The "fixed point" on which a lever rests and, or pivots is known as which of the following?
  • screw
  • wheel and axle
  • see saw
  • fulcrum
Q.3
A simple machine that consists a rigid bar that pivot about a fixed point
  • lever
  • pulley
  • wheel and axle
  • fulcrum
Q.4
What is a simple machine?
  • a device that has only one working motor
  • a device that makes work easier
  • a device that makes more work for a job
  • device that is made up of two or more machines
Q.5
Diseases may spread more rapidly when an area is crowded, so disease is considered to be a
  • type I survivorship curve
  • population crasher
  • density-dependent limiting factor
  • population enhancer
Q.6
What pattern of growth will a population with limited resources show?
  • density-dependent
  • exponential
  • logistic
  • logical
Q.7
The movement of a single caribou into a herd is an example of
  • population
  • immigration
  • emigration
  • predation
Q.8
The way in which individuals of a population are spread out is called
  • population density
  • survivorship
  • population dispersion
  • logistic curve
Q.9
Which of the following is a density-independent limiting factor?
  • natural disaster
  • predation
  • disease
  • parasitism
Q.10
Which of the following statements about primary succession is true?
  • It begins with a climax community
  • Small mammals are the first to live there
  • It begins with bare rock
  • It begins with rock and soil
Q.11
Which of the following is a density-dependent limiting factor?
  • human activities
  • unusual weather
  • competition
  • natural disaster
Q.12
To measure population density, you must divide the number of individuals living in a defined space by the
  • area of the space
  • birth and death rates
  • carrying capacity
  • height of the space
Q.13
Which of the following will increase the size of a population?
  • emigration and births
  • immigration and deaths
  • immigration and births
  • emigration and deaths
Q.14
Nesting birds often space themselves evenly from other nests. This pattern is called
  • clumped dispersion.
  • uniform dispersion.
  • random dispersion
  • scatter dispersion
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