Which elements in the periodic table are LEAST LIKELY to combine with other elements?
A. halogens
B. noble gases
C. alkaline earths
D. transition metals
B. noble gases (far right column on the periodic table)
100
What are the 4 NONrenewable energy resources?
Oil, Coal, Natural Gas, Nuclear Energy
100
A rock layer that collects and stores water is an____________________.
Aquifier
100
Change over time is called _________.
Evolution.
100
A disease that affect many people in an area is known as____________.
An epidemic.
200
_________ can be described as pure substances because they cannot be separated into parts by physical means.
Elements
200
Which of the following does NOT release carbon dioxide when it is used as an energy resource?
A. Petroleum (Oil)
B. Ethanol
C. Coal
D. Wind
D. Wind
200
Pamlico Sound is an estuary because it is:
A. an area fed by several rivers.
B. an area that many watersheds drain into.
C. an area that is protected by land on both sides.
D. an area where freshwater mixes with salt water.
D. an area where freshwater mixes with salt water
200
At what plate boundary does sea floor spreading occur?
Divergent boundary (plates are moving apart)
200
Why is bacteria considered to be living?
Because they take in nutrients ("eat") AND they reproduce on their own.
300
The nucleus of an atom contains:
Protons AND Neutrons
300
The wise use of natural resources is called _________.
Conservation.
300
What is the source of most of the salt in the ocean?
Dissolved salts from rocks on land.
300
Scientist study _____________ by using ice cores.
Climate change
300
How can the rate of an infectious disease be drastically reduced?
Limit contact.
400
How does a chemical equation show the law of conservation of mass?
Because both sides of the equation contain the SAME ELEMENTS and the SAME NUMBER OF ATOMS.
400
What are the main RENEWABLE resources? (hint: there are 5)
Solar/Sun, Wind, Water/Hydro, Geothermal, and Biomass
400
Which of the following water pH levels is best for marine organisms?
A. 1.0
B. 3.5
C. 8.0
D. 11.5
C. 8.0
400
Which division of the geologic time scale is the longest?
Eon.
400
Why do you get symptoms of an illness?
because of your body's immune response.
500
Examine the following chemical equation, which shows only the reactants and one product.
Zn+2HCl=ZnCl2+?
How many H atoms must be present in the second product that is formed?
2
500
What is a major disadvantage about using biomass as a renewable energy resource?
Either answer is acceptable:
It still produces carbon dioxide.
and/or
There is not enough land space on earth (including deserts) to grow all the corn needed to produce the amount of biomass that we would need.
500
Which of these is NOT a threat to living ocean resources?
A. overfishing
B. oil spills
C. evaporation
D. pollution
C. evaporation
500
Which of the following is MOST LIKELY to cause the EXTINCTION of a species?
A. mutation
B. a changing environment
C. natural selection
D. genetic variation
B. a changing environment
FYI:
Genetic variation is most likely to help species avoid extinction.
500
Why is it suggested that people get a flu vaccine every year?
Because the influenza virus can mutate very rapidly.