8th Grade Science Quiz Bowl 4

Scientists can use relative dating, absolute dating, or a combination of the two techniques to determine the age of a fossil. Which of the following could be determined using both methods?

• the difference in age between two fossils

• which of two fossils is the older

• a narrow age range for a fossil

• the exact age of a fossil

Which method would be BEST for scientists to use to determine the absolute age of a Precambrian igneous rock?

• index fossils

• law of superposition

• radiometric dating

• law of original horizontality

Which best explains a way of protecting water for human consumption?

• Ban the use of lakes and rivers for recreation.

• Allow dumping of some waste into lakes and rivers

• Reduce the use on lakes and rivers for irrigation of crops.

• Improve water quality standards for industries located on lakes and rivers.

Tags

NGSS.MS-ESS3-3

NGSS.MS-ETS1-1

Which is the best example of a point source pollution?

• runoff from fields

• pesticides sprayed into the air

• oil spill from a boat in the Atlantic Ocean

• smoke from multiple industries in a large city

Consider this food web:

Where is the largest amount of energy found in this food web?

• hawk

• grass

• mouse

• grasshopper

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

The diagram below shows a food web for an ocean ecosystem.

How would an increasing shark population most likely affect this ecosystem?

• The algae population would decrease.

• The limpet population would decrease.

• The seagull population would decrease.

• The octopus population would decrease.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-3

NGSS.MS-LS2-4

Which is the BEST example of a community responding to an external factor?

• Plants and animals thrive on the forest floor after the fall of a white pine causes an opening in the canopy

• Many species of raptors fly alongside each other during the autumn migration to warmer climates.

• Elephants use their tusks to dig the salt needed in their diets from the wall of a cave.

• Adult musk oxen in a herd surround their young to protect them from wolves.

Tags

NGSS.MS-LS2-4

How does the use of wood to produce energy affect the environment?

• Deforestation eliminates the flooding of rivers.

• Deforestation eliminates the habitats of organisms.

• Burning wood releases viruses into the atmosphere.

• Burning wood releases bacteria into the atmosphere.

Tags

NGSS.MS-ESS3-4

NGSS.MS-LS2-1

NGSS.MS-LS2-4

A heavily wooded area needs additional solar collectors to meet energy demand. Which statement describes a possible environmental consequence of adding these collectors?

• The amount of air pollution will increase.

• The amount of water pollution will increase.

• More trees will need to be planted to insulate the solar collectors.

• Trees will need to be cleared for the solar collectors to work efficiently.

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-5

A paleontologist found a fossil of an organism that looks like modern-day ferns. Which would most likely assist the paleontologist in proving that the two organisms are related?

• mapping the location of where the fossil grew against where modern-day ferns grow

• recording how the tectonic plates have moved since the fossil was created

• analyzing the composition of the rock in which the fossil was discovered

• comparing the structures of the fossil to that of modern-day ferns

Tags

NGSS.MS-LS4-2