stud
bud
Sign up
Log in
Home
Library
Explore
SAT
More
EOG Review - All topics Flashcards | StudBud
Explore
/
EOG Review - All topics
EOG Review - All topics
38 terms
·
StudBud Administration
·
3,178 plays
8th grade science, NC
Flashcards
38 cards
F
Practice quiz
P
Host live
L
Questions
38
Answers
1
Which best explains why some people will develop cancer after exposure to a harmful chemical?
concentration of the chemical
potency of the chemical
individual exposure to the chemical
individual susceptibility to the chemical
2
What does the hardness of water indicate?
high levels of calcium and magnesium
decreased pressure in pipelines to faucets
low levels of calcium and magnesium
increased pressure in pipelines to faucets
3
What is one way the government of the US attempts to reduce pollution in the oceans?
create new desalination plants
discontinue sewage treatment programs
enforce laws limiting trash dumping
increase oil and gasoline production
4
What is one way scientists analyze the health of a river?
by measuring its dissolved oxygen content
by measuring its depth
by measuring the speed at which the river flows
by measuring the distance water travels to reach an ocean
5
See the following experiment. Which property of water is being tested?
bouyancy
polarity
solubility
cohesion
6
X has a mass of 5g, and Y has a mass of 10g. After a reaction, what is the mass of the product?
50g
10g
5g
15g
7
Why might the mass of the reactants be greater than the mass of the products in a reaction?
the temperature of the reactants was low
a gas was produced
the salinity of the reactants was high
a solid was produced
8
Which pure substance is composed of more than one element?
water
gold
carbon
sodium
9
A layer of marine fossils is found in a desert. Which hypothesis
best
explains this?
a catastrophic event once occurred int he area
erosion turned most of the limestone into sand
volcanic activity once occurred in the area
the area was once covered by water
10
Which is the best way to determine if an object is made of pure silver?
find the density and compare it to the density of silver
test to see if the object is chemically reactive
compare the mass of the object to the mass of pure silver
determine the solubility of the object
11
Which example best represents an interconnection between aquatic and terrestrial food webs?
mountain lions catch and eat deer
bats eat mosquitoes
snakes eat bird eggs
fish eat insects that land on the surface of a pond
12
The theory of global warming is based on an increase of what atmospheric gas?
hydrogen
helium
carbon dioxide
oxygen
13
Which element is a poor conductor of heat?
Fe
K
F
Ag
14
Where is the majority of Earth's freshwater located?
polar ice caps
Pacific Ocean
rivers
clouds
15
The shaded represent where fossils of a land animal were found in South America and Africa.
The animals swam from one continent to the other.
The animal developed on both continents at the same time.
The two continents were once connected by a land bridge.
The two continents were once joined together.
16
Which is a naturally occurring chemical?
nylon
salt
plastic
aspirin
17
Which statement supports the theory of evolution?
fossils show that vertebrates share a common ancestor
all plants and animals have DNA
all cells come from previous cells
matter cannot be created or destroyed
18
Which statement best explains why some insects can walk across the surface of water?
water is nonpolar, and adhesiveness provides surface tension
water is polar, and cohesiveness causes high surface tension
Water is nonpolar, and cohesiveness causes capillary action
Water is polar, and adhesiveness causes capillary action
19
How can the atmosphere be considered part of the hydrosphere?
it contains oxygen needed for life on Earth
it traps pollutants that would otherwise harm Earth
it is a source of water
it blocks UV rays
20
Which theory
best
describes how an asteroid striking Earth may have caused dinosaur extinction?
The asteroid caused fires that reduced the food supply.
Glaciers melted rapidly, causing floods.
Dense clouds formed, causing a global drop in temperature.
Land masses were altered, reducing the space available.
21
Which describes a nonpoint source of pollution?
accumulation of oil in a stream next to a gas station
liquid fertilizer flowing from a barrel into a stream
chemical spill in a river next to a manufacturing complex
runoff from a road into a stream
22
Which best explains how geologic time scales can help scientists study the evolution of life?
geological features have evolved at the same rate as life
compare life histories of species with rock habitats
existence of rocks before life
correlate life with geological events
23
Which source of water pollution includes oil discharge from automobiles and storm drainage?
sedimentation
bacteria
agriculture
urban runoff
24
How are parasites and viruses similar?
both reproduce using host cells
both break down food using oxygen
both are contagious diseases
both infect host organisms
25
The following shows a cross section of land that has not been overturned and includes a fossil.
It is older than the sandstone
It is younger than the sandstone
It is younger than the shale
It is older than the shale
26
Which interaction illustrates a terrestrial-aquatic food web relationship?
a bird laying eggs in a nest in a tree
a bear eating a fish in a river
a fish eating plankton in the ocean
a turtle burying eggs in the sand
27
Which
best
describes a bioindicator?
a species that can adapt to a variety of conditions
a species that depends on certain conditions to survive
a species that has been introduced to an ecosystem
a species that has a short life span
28
Which is the best way to track volcanic ash after an eruption?
ground truthing
weather balloons
topographic maps
satellite imagery
29
Which best explains the importance of dissolved gases in the ocean?
They help maintain a constant water temperature.
They help provide oxygen for aquatic animals.
They help maintain constant levels of salinity.
They help control pollution.
30
The following diagram shows a
Euglena
and a
Paramecium
both have a cell wall to maintain structure
both have structures that aid in movement
both produce their own food in order to live
both are types of plants
31
See the following chart, which shows the worldwide number of measles cases over 20 years.
vaccinations
antibiotics
chemotherapy
quarantines
32
Which project is most likely to interest a scientist working at a biotechnology company?
conservation of key species within ecosystems
prevention of sewage leaking into water supplies
study and reconstruction of fossilized bones
development of genetically modified corn plants
33
What characteristic of aluminum allows it to be turned into aluminum foil?
it is malleable
it is soluble
it is dense
it is magnetic
34
Which is an example of a physical change?
rusting
burning
boiling
rotting
35
Fossils of warm-weather plants were found in the Arctic. Which is the
best
conclusion?
spores of plants drifted by air current to the Arctic
the Arctic land used to be in a tropical location
ocean currents carried the plants to the Arctic
birds carried seeds to the Arctic
36
See the following drawing. What does this technology measure?
water temperature
water depth
pH levels of water
dissolved oxygen in water
37
Which ice core clue supports a large volcanic eruption causing a change in global temperature?
identities of trace metals
amounts of atmospheric dust
levels of dissolved oxygen
estimates of natural radioactivity
38
How can someone use the periodic table to find an element with properties similar to another?
by comparing atomic weight
by finding the group
by comparing density
by comparing malleability
