EOG 8th Grade Science Question Preview (ID: 59524)


EOG 2022 8th Grade Study Guide. TEACHERS: click here for quick copy question ID numbers.

In some environments, wolves prey on deer for their source of food. If all of the wolves were taken from the environment, what would most likely happen to the deer population?
a) The deer population would increase and begin to compete for food.
b) The deer population would become larger and healthier animals.
c) The deer population would decrease, because there would be an increase in disease.
d) The deer population would change color, because they would not have to hide from wolves.

Periods
a) Elements that have properties of both metals and nonmetals.
b) Elements that are good conductors of electric current and heat, are ductile and malleable; Represents a majority of elements
c) Horizontal rows on the periodic table; Characteristics will change as you move across a Period
d) the number of protons in the nucleus of an atom; Found on the periodic table and used to arrange the elements

Turbidity
a) Water that is clean and does not have any bad bacteria in it and is able to drink or be used by people
b) Water that is clean and does not have any bad bacteria in it and is able to drink or be used by people
c) A situation which occurs when a gas becomes dissolved in another substance
d) Measurement of how clear the water is

Salinity
a) The water found in cracks and pores in sand, gravel and rocks below the Earth's surface
b) The saltiness or dissolved salt content of a body of water
c) Rain, snow, sleet, or hail that falls to the ground from the clouds
d) The draining away of water from the surface of an area of land

Why do doctors suggest that people get a flu vaccine each year?
a) Viruses replicate more rapidly over time.
b) Vaccines are absorbed by the body after a year.
c) Viruses can mutate from year to year.
d) Vaccines get stronger over time.

Which is an example of a renewable energy resource?
a) coal
b) Biomass
c) oil
d) gas

What happens to water molecules during the boiling process?
a) They move faster and farther apart as they absorb heat.
b) They move faster and remain closer together as they absorb heat.
c) They move more slowly but move farther apart as they lose heat.
d) They move faster and move farther apart as they lose heat.

Commensalism
a) a symbiotic relationship in which one organism benefits at the expense of another
b) a symbiotic relationship in which one organism benefits and the other is not helped or harmed
c) an energy resource that formed over millions of years from the decayed remains of ancient plants and animals
d) domain - kingdom - phylum - class - order - family - genus - species

Mutualism
a) The top number of an element box that indicates the number of protons (also electrons) in an atom
b) Amoebic dysentery, malaria, African sleeping sickness
c) a symbiotic relationship in which both organisms benefit
d) an organism that gets energy by breaking down the remains of dead organisms and the wastes of living things

Decomposer
a) an organism that gets energy by breaking down the remains of dead organisms and the wastes of living things
b) Non reactive elements found on the far left of the periodic table, containing a full outer shell of electrons
c) The bottom number in an element box, can be subtracted by the atomic number to calculate the number of neutrons
d) An organized chart of all the known elements arranged horizontally by increasing atomic number (protons) and vertically by si

Parasitism
a) a fossil of a commonly found, widely distributed organism that lived in a specific time period, used for relative dating
b) a symbiotic relationship in which one organism benefits at the expense of another
c) preserved remains or evidence of organisms from the distant past
d) Cats and Dogs

Genetic Modification
a) a symbiotic relationship in which one organism benefits at the expense of another
b) area where ocean meets land, organisms survive tides, waves and currents
c) organisms that live in the deep ocean and survive extreme pressures, toxic chemicals, low temperatures, and perpetual dark.
d) makes changes in the genetic material of an organism, often to obtain a desired trait

Biotic Factors
a) the living parts of an ecosystem
b) water runs downhill to the lowest elevation and collects in a body of water
c) Multicellular organisms with membrane bound organelles and a true nucleus
d) body parts with a similar function, but different structures

Law of Conservation of Mass
a) Matter is not created or destroyed, only transformed. The amount of reactants will equal the amount of the products.
b) pollution whose source can be identified, ex: oil spills, sewage leaks
c) The ratio of mass to volume. Calculated by D=m/v. Can be used to identify matter.
d) The formation of a new species from an existing species. Ex: Arctic Fox and Darwin's Finches

Homogenius Mixture
a) area where ocean floor slopes, home to coral, sea turtles, colorful fish
b) all of Earth's land, water and the lower part of the atmosphere
c) Also called a solution, particles are evenly distributed throughout.
d) Amoebic dysentery, malaria, African sleeping sickness

Matter
a) the use of isotopes, and calculation of decay, to measure the age of a preserved organism or rock layer based on half-life
b) Used for growth and repair
c) body part that no longer has a useful function in an organism
d) Anything that has mass and takes up space

Atomic #
a) A single-celled (prokaryotic) microbes, 3 shapes
b) The top number of an element box that indicates the number of protons (also electrons) in an atom
c) An organized chart of all the known elements arranged horizontally by increasing atomic number (protons) and vertically by si
d) minerals, diamonds, metals, fossil fuels

Adhesion
a) Attraction of water molecules to other molecules
b) A semi-enclosed are where freshwater from a river meets salty water from the sea
c) Water that doesn't come from the sea and is used for drinking water
d) The saltiness or dissolved salt content of a body of water

Cohesion
a) Environmental Protection Agency
b) The vast body of salt water that covers almost three fourths of the earth's surface
c) Attraction between water molecules
d) An area of land around a smaller river, stream, or lake

what is the smallest building block of matter
a) atom
b) molecule
c) subatomic particle
d) compound

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