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EOG Review #2
Test Description: EOG review #2 2022 science 8th grade
Instructions: Answer all questions to get your test result.
1) Dissolved Oxygen
A
The oxygen in water that aquatic animals breathe in to get their heart beating
B
The primary federal law in the United States governing water pollution
C
Environmental Protection Agency
D
The land that water flows across or under on its way to a river
2) If a chemical reaction such as photosynthesis begins with 6 atoms of carbon (C), how many atoms of carbon (C) should be in the products?
A
12 atoms of carbon (C)
B
6 atoms of carbon (C)
C
1 atoms of carbon (C)
D
3 atoms of carbon (C)
3) Why would a whale fossil be found in a desert?
A
The area was once covered by an ocean.
B
Predator animals dragged the whale from the water into the desert.
C
Humans moved the whale fossil to the desert for display.
D
The whale walked on land and later died in the desert.
4) Where do you find the amount of electrons in an element?
A
Element Name
B
Atomic Weight
C
Atomic Number
D
Symbol
5) Group 18
A
Noble Gases are NONREACTIVE b/c the outer energy level is full; gases at room temperature
B
contains nonmetals; 7 VALENCE ELECTRONS; very reactive; poor conductors of electric current; VERY REACTIVE with Group 1
C
RIGHT OF STAIRCASE, not malleable/ductile, not shiny, poor conductors
D
Noble Gases are NONREACTIVE b/c the outer energy level is full; gases at room temperature
6) Mass Number
A
the number of protons in the nucleus of an atom, how the periodic table is organized
B
the sum of the numbers of protons and neutrons in the nucleus of an atom
C
RIGHT OF STAIRCASE, not malleable/ductile, not shiny, poor conductors
D
6 VALENCE ELECTRONS, contains three nonmetals; one metalloid; one metal; reactive; all but oxygen are solid at room temp
7) Metals
A
the sum of the numbers of protons and neutrons in the nucleus of an atom
B
4 VALENCE ELECTRONS; solids at room temperature
C
LEFT OF STAIRCASE, shiny, malleable, ductile, good conductors of electric current, good conductors of thermal energy
D
Groups 3-12, 1-2 electrons in the outer energy level, less reactive than alkali-earth metals, shiny, good conductor of therma
8) Group/Family
A
contains nonmetals; 7 VALENCE ELECTRONS; very reactive; poor conductors of electric current; VERY REACTIVE with Group 1
B
semiconductors, BORDER THE STAIRCASE, shiny, brittle, hard, at high temp- good conductors of electric current
C
the number of protons in the nucleus of an atom, how the periodic table is organized
D
VERTICAL column of elements (up and down), determine an element's reactivity, and have the same number of VALENCE electrons
9) Metalloid
A
semiconductors, BORDER THE STAIRCASE, shiny, brittle, hard, at high temp- good conductors of electric current
B
2 VALENCE ELECTRONS; Alkaline metals
C
VERTICAL column of elements (up and down), determine an element's reactivity, and have the same number of VALENCE electrons
D
the number of protons in the nucleus of an atom, how the periodic table is organized
10) NonMetals
A
poor conductors of heat and electricity
B
are brittle-- they break easily
C
have high melting points
D
are malleable and ductile
11) Nucleus
A
toxic chemical that causes a physical or chemical change in the DNA of an organism
B
controls all activities of a cell, contains DNA (brain of the cell)
C
how things change over time
D
A place where plants and/or animals naturally live and grow
12) Index Fossils
A
anything that has mass and takes up space
B
lived for a short period of time over a wide area
C
gap in rock layer that is due to erosion or periods without any deposition
D
family of elements that have similar properties (column - up and down)
13) All matter is made of _______, which may combine to form _______.
A
compounds; molecules
B
molecules; elements
C
atoms; molecules
D
elements; atoms
14) A mouse eats seeds and insects. Which best describes the role of the mouse?
A
consumer
B
producer
C
herbivore
D
decomposer
15) Plankton
A
system that supports and protects the body
B
Children or young of a person, animal, or plant
C
The process by which plants use light energy from the sun to change carbon dioxide and water into sugar and oxygen.
D
Microscopic organisms that live in aquatic environments.
16) nonrenewable energy
A
molten rock rises into open space in sedimentary rock layers and cools
B
Non reactive elements found on the far left of the periodic table, containing a full outer shell of electrons
C
sunlight, living organisms, water
D
resource that is used faster than it can be replaced
17) Hydrothermal Vents
A
forms when sediment is laid down in layers and the compacts and cements together
B
areas of land that drain into smaller rivers, lakes or streams that lead to a river within a river basin
C
differences that exist naturally among a species, ex: humans have different eye colors
D
Vents that provide energy source for life in the deep ocean
18) Law of Superposition
A
continuous movement of Earth's water between Earth's surface and it's atmosphere
B
water runs downhill to the lowest elevation and collects in a body of water
C
fossil fuels - coal, oil, natural gas, nuclear power
D
states that the oldest sedimentary rock layers will always be on the bottom unless they have been disturbed by geologic force
19) Tundra
A
A tube in the throat in which carries air to the lungs (windpipe)
B
Driest biome- least amount of rain.
C
An extremely cold, dry biome climate region characterized by short, cool summers and bitterly cold winters.
D
Get messages to other parts of the body
20) Abiotic
A
living
B
toxic waste
C
nonliving
D
Digests food completely, turns most of the nutrients into blood
*select an answer for all questions
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