Soils have pore spaces which are tiny holes filled with water and air. Which of the following is a result of water's adhesive properties
A. water molecules destroying pore spaces as water moves from a liquid to a solid
B. water molecules dissolving solid particles to produce the pore spaces
c. Water molecules sticking to each other as tehy travel through pore spaces
d. water molecules clinging to the soil surrounding the pore spaces
What is water molecules clinging to the soil surrounding the pore spaces
100
What causes earthquakes, volcanic eruptions, and the formation of mountains?
a. gravitational forces of Moon and Sun
b. irregularites in the rotation of Earth
c. motion of the plates of Earth's crust
d. freezing and thawing of crustal plates
What is the motion of plates of Earth's crust?
100
Which of the following is not a claim of cell theory?
a. all living things are composed of at least one cell
b. all cells have at least one nucleus
c. new cells can arise only from preexisting cells
d. the cell is the basic unit of structure and function of life
What is all cells have at least one nucleus
100
What is the process of heating food or a liquid to a temperature that kills most pathogens?
a. sanitation
b. pasteurization
c. sterilization
d. inoculation
What is pasteurization?
100
An engineer is designing a tool to be used underwater. The most important constraint on the engineer's choice of material is the material's
a. boiling point
b. density
c. malleability
d. solubility
What is solubility?
200
Which of the following is the most accessible source of drinking water for humans in North Carolina? a. an aquifer, b. an esturary, c. an ice cap, d. an intertidal zone
What is an aquifer
200
Which of the following involves the use of satellites?
a. determining when tides change
b. studying radioactivity
c. mapping Earth's surface
d. reducing pollution
What is mapping Earth's surface?
200
Which of the following is related to a gene in a way similar to how a cell is related to an organelle?
a. chromosome
b. organ
c. nucleus
d. gamete
What is a chromosome?
200
Some diseases are contracted by living organisms that transfer disease-causing viruses or bacteria to humans. Which of the following terms describes such an organism?
a. vector
b. carrier
c. parasite
d. pathogen
What is a vector?
200
The property of metals that allows them
to be used to make coins that have the
same thickness.
A electrical conductivity
B density
C malleability
D specific heat
What is malleability.
300
Which of the following would be a component of both a terrestrial food web and an aquatic food web?
a. bull shark
b. helock tree
c. raccoon
d. an eagle
What is a raccoon
300
Index fossils tell scientists what most important fact?
A. Time, B. Place, C. Identification of Plant/Animal, D. Is the Globe Warming
What is Time?
300
Which structure is correctly paired with its function?
a. cilia, cellular respiration
b. contractile vacuoles, feeding
c. trichocysts, defense
d. micronucleus, waste removal
What is a trichocysts and defense?
300
A funus that is a parasite might feed on which of the following?
a person's skin
b. a dead tree
c. bread
d. wet bathroom tiles
What is a persons skin?
300
Scientists have linked chemicals found in cigarettes to all of the following except...
a. asthma
b. autoimmune disease
c. cancer
d. heart disease
What is autoimmune disease
400
Today manned submersibles can carry scientists as far as 6,000m below the ocean's surface. What hazard of the deep ocean did the designers of this technology have to overcome?
a. tremendous heat c. great pressure
b. lack of oxygen d. absence of light
What is great pressure?
400
Which of the following does the fossil record suggest about life on Earth?
a. that most species have always been here
b. that mutations are the reason for evolution
c. that life came to Earth on an asteroid
d. that living species have changed over time
What is living species have chaged over time?
400
The process where oxygen is added to nutrients to release energy in the form of ATP.
photosynthesis
endocytosis
exocytosis
cellular respiration
What is cellular respiration
400
A chemical that kills bacteria or slows their growth is called which of the following?
a. antibody
b. antibiotic
c. asipirin
d. decongestant
What is an antibiotic?
400
An engineer wants to design a tool for picking up nails and other metal objects that fall behind his workbench. The application of which physical property would be the most helpful?
a. mass
b. electrical conductivity
c. buoyancy
d. magnetism
What is magnetism?
500
An ecologist studied a lake in which the algae population experienced a sudden rapid growth. Which of the following could have caused this change to the lakes's algae population?
a. lowered pH levels caused by acid rain
b. reduced levels of dissolved oxygen
c. raised carbon dioxide levels fromdecay
d. increased concentrations of nitrates from runoff
What is increased concentrations of nitrates from runoff?
500
How does natural selection lead to evolution?
a. stronger offspring kill weaker members of the species
b. helpful traits accumulate among surviving members of the species
c. overproduction provides food for stronger members of the species
d. Environmental changes kill weaker members of the species
What is helpful traits accumulate in surviving members of the species?
500
The cells of plants and some protists contain organelles called chloroplasts. Which of the following is the function of the cholorplasts?
a. support the cell
b. control the production of proteins
c. carry genetic code from one generation to the next
d. capture energy from sunlight and convert it into chemical energy
What is capture energy from sunlight and convert it to chemical energy
500
Whic of the following orders the microbes from smallest to largest?
a. virus, bacterium, protist
b. virus, protist, bacterium
c. protist, bacterium, virus
d. bacterium, protist, virus
What is virus, bacterium, protist?
500
The specific heat of copper is 387 J/kg degrees C. If the temperature of 0.05 kg of copper is raised from 25 degrees C to 30 degrees C, how much heat was put into the copper?
A 50 Joules
B 50 grams
C 96.8 Joules
D 100 grams