stud
bud
Sign up
Log in
Home
Library
Explore
SAT
More
NJSLA 8th Grade Science Review! Flashcards | StudBud
Explore
/
NJSLA 8th Grade Science Review!
NJSLA 8th Grade Science Review!
74 terms
·
StudBud Administration
·
3,960 plays
Review for the NJ SLA Science Test
Flashcards
74 cards
F
Practice quiz
P
Host live
L
Questions
74
Answers
1
A tool used by scientists to identify unknown organisms based on observable traits is called:
scientific name.
homologous structure.
dichotomous key.
taxonomic Tree
2
The water cycle would not occur if which of the following were missing?
solar energy
plants
Ice caps
Animals
3
What are the three types of plate boundaries?
convergent, transverse, divergent
divergent, transform, transverse
convergent, divergent, transform
convergent, transverse, transform
4
What does the ciruclatory system do?
Used to transmit nerve impulses between parts of the body.
Takes food & oxygen cells and carry waste away from cells
Used to breakdown food, absorb nutrients and remove waste
Used to bring oxygen into the body and remove carbon dioxide
5
How do producers make their food?
by sound
by eating other producers and consumers
none of the above
by light
6
Which of the following waves in the electromagnetic spectrum has the longest wavelength?
Infrared waves
Visible light waves
Gamma waves
Radio waves
7
What process below releases primarily oxygen into the atmosphere?
Respiration
Photosynthesis
Combustion
Osmosis
8
Bases are number _-_ on the pH scale.
0-6
7
8-14
0-14
9
According to the theory of evolution, variations in a species are most likely the result of?
Asexual reproduction and acquired traits
Asexual reproduction and overpopulation
Sexual reproduction and mutations
Sexual reproduction and cell division
10
The frequency of a wave can be calculated by
multiplying the velocity times the wavelength.
dividing the frequency by the velocity.
dividing the speed by the wavelength.
multiplying the amplitude by the wavelength.
11
The outer layer of the Earth that contains both the crust and the upper mantle, is called the:
core
asthenosphere
hemisphere
lithosphere
12
What part of the electromagnetic spectrum can be directly observed by humans?
Radio waves
Gamma rays
Visible light
Ultraviolet light
13
H20= neutral. Its pH is 7. Lemon juice is put in H20. pH= less than 7; litmus paper turns red.
The lemon juice is an acid.
The lemon juice is neutral.
The lemon juice is a base.
The lemon juice is a salt.
14
Weather patterns in the United States of America generally travel from the
North Pole toward the Equator.
west toward the east.
east toward the west.
Equator toward the North Pole
15
If you place 3 ice cubes in a glass of water at room temperature, which will occur?
Cold from ice cubes transfer to water; water freezes.
Cold tranfers from ice/water mixture to air; air cools
Energy from the water transfers to ice cubes; ice will melt.
Energy transfers equally between ice cubes & water;no change
16
Acids are numbers _-_ on the pH scale.
8-14
7-14
0-6
0-7
17
Convection in the oceans and atmosphere is a result of the difference in
volume
temperature
mass
weight
18
The fossil record supports Darwin’s theory of evolution by showing that plants and animals:
are the same in various environments.
have changed over time.
remain unchanged until extinction.
existed for only a few thousands of years
19
Which property is the least reliable for mineral identification?
Luster
Streak
Hardness
Color
20
A change in genetic material that produces variation within a species is what?
translation
replication
mutation
transcription
21
Which of the following allows humans on Earth to experience day and night?
Orbit
Axis
Revolution
Rotation
22
Which cellular organelle contains DNA and controls the function of the cell?
Endoplasmic Reticulum
Golgi Body
Nucleus
Ribosome
23
The process of photosynthesis occurs in the:
chloroplast
mitochondria
ribosomes
nucleas
24
Which of the following is a chemical property of matter?
Density
Melting
Magnetism
Flammability
25
In what process is water vapor changing to a liquid?
Transpiration
Radiation
Condensation
Convection
26
The primary cause of crustal movement is
radiation.
conduction.
convection.
magnetism.
27
When determining a region’s climate, the two main variables considered are the average
wind speed and the types of animals present.
air temperature and the size of the region.
barometric pressure and the average precipitation.
precipitation and average air temperature.
28
Atoms of an element contain only one type of atom because they each contain the same number of:
electrons
nucleons
protons
neutrons
29
The process of choosing parent organisms for desired characteristics is called what?
random chance
natural selection
genetic manipulation
artificial selection
30
What is it called when the Earth spins around on its axis?
rotation
circling
orbiting
revolution
31
What are the two types of energy? (pick one out of the two)
Force
Kinetic
None of the above
Potential
32
Which of the following is the best estimate of the number of stars in a typical galaxy?
Millions
Thousands
Hundreds
Billions
33
Neutral substances, like water, are number _ on the pH scale.
7
0
14
1,000,000
34
What are all LIVING things made of?
cells
atoms
air
molecules
35
What molecule allows hereditary information to be passed from generation to generation?
DNA
Lipids
ATP
Proteins
36
Sulfuric acid H₂SO₄ is broken down to separate elements. How many different atoms result?
2
6
3
7
37
What are the Five Kingdoms?
None of the above
Bacteria, Protozoa, Fungi, Plants, Animals
Animals, Plants, Bacteria, Fungi, Mushrooms
Mushrooms, Bacteria, Plants, Animals
38
In order for a lunar eclipse to occur, the moon must be in what phase?
3rd Quarter
1st Quarter
Full Moon
New Moon
39
I have a sample of unknown liquid. Which physical property will help determine that it's H2O?
The color of the liquid
The boiling point of the liquid
The volume of the liquid
The mass of the liquid
40
Which of the following is a transfer of chemical energy to thermal energy?
A boy eats an apple, which regulates his body temperature.
An atom is split to increase the temperature of water
A hairdryer is turned on to dry someone's hair.
An ice cube is placed in warm soup and melts.
41
Which of the following is a non-renewable energy source?
waves
wind
sunlight
coal
42
What is the supercontinent that existed during the late Paleozoic and early Mesozoic eras?
Pangaea
Gaea
Eurasia
United States
43
How many electrons are in a neutral atom with an atomic number of 12?
12
4
6
24
44
When salt dissolves in water, the water is the:
solubility
solution
solvent
solute
45
Which of the following adaptations would not help a plant survive in a hot, dry environment?
Grow long shallow roots
Open their stomata at night
Have thin large leaves on branches
Have needles instead of leaves
46
Which cell type would most likely have the most mitochondria?
A cell of stomach lining that manufactures digestive enzymes
A red blood cell that transports oxygen.
A nerve cell that transmit signals to the brain stem.
A muscle cell in the leg muscle of a runner
47
DNA controls characteristics of an organism. True or False?
False
True
48
Which of the following describes the differences between solids and liquids?
Both= definite volume, but only liquids have definite shape
Liquid= definite volume & shape solid= only definite shape.
Both= definite shape, but only solids have definite volume.
Solid= definite volume & shape liquid= only definite volume
49
The Basin and Range topography of Nevada is recognized for:
valleys and earthquakes
volcanoes and earthquakes.
valleys and mountains.
volcanoes and rivers
50
The process by which rocks are broken down by water, wind, or ice is
chemical weathering.
biological weathering
mechanical weathering.
structural weathering.
51
A girl riding on a skateboard at 3 m/s suddenly hits the curb. The girl will fall:
forward at a speed equal to 3 m/s.
backward with a speed greater than 3 m/s.
forward with a speed greater than 3 m/s.
backward at a speed equal to 3 m/s.
52
Which of the following is a homogenous mixture?
M&M's
milk
vegetable soup
fruit salad
53
A goat is walking at a constant speed of 2 m/s. How far will the goat travel in thirty minutes?
1800m
60m
3600m
15m
54
The Law of Conservation of Matter/Mass states that energy can never be created nor destroyed.
False
True
55
Plants transform energy from the sun into:
chemical energy
mechanical energy
nulear energy
solar energy
56
Which of the following best describes the function of this system shown below?
Supports the skeletal system
Exchanges gases with the environment
Absorbs nutrients from food
Responds to stimuli in the environment
57
Spiders make perfect webs the 1st try. It's born with the ability. This is an example of a(n):
environmental influence.
learned behavior
innate behavior.
codominant trait.
58
If the Earth were 2x as massive, then the gravitational force between it and the sun would be:
the same
half as great
four times as great.
twice as great
59
Which type of infection of the human body can most likely be treated with an antibiotic?
Viral
Fungi
Bacterial
Protist
60
Using periodic table, which group of elements would be expected to have similar properties?
O, S, Se
Na, Mg, K
N, O, F
Ne, Na, K
61
What type of rock forms when lava cools?
Sedimentary
Transitional
Metamorphic
Igneous
62
Fossils are most commonly preserved in what kind of rock?
transitional rock
sedimentary rock
igneous rock
metamorphic rock
63
What is the layer of the atmosphere in which weather occurs?
Exosphere
Mesosphere
Stratosphere
Troposphere
64
What type of galaxy is the Milky Way?
Lenticular
Elliptical
Spiral
Irregular
65
White is a helpful adaptation for animals living near the North Pole because it:
helps the animals run faster
absorbs more heat from the sun.
makes the animals feel more comfortable.
provides camouflage for the environment
66
Compared to other stars, the Sun is a:
white dwarf.
supernova
medium-sized star
red giant
67
Which wave requires a medium for transmission?
Radio
Light
Infrared
Sound
68
What is the earth made of?
crust, mantle, core
crust and core
none of the above
mantle and core
69
When there are no more living members of a species, that species is said to be
endangered
evolved
unchanged
extinct
70
Which of the following keeps planets of the solar system in orbit around the sun?
Gravitational force
Electromagnetic energy
Atmospheric pressure
Thermal energy
71
A human egg cell with 24 chromosomes is fertilized by a sperm cell with 23. The result is:
resemble the mother more than the father
inherit a disorder due to a missing chromosome.
resemble the father more than the mother
inherit a disorder due to the extra chromosome.
72
What does the Moon evolve around?
asteriods
the Solar System
Itself
Earth
73
Clouds usually form on the windward side because this is where air
rises and cools.
sinks and cools.
rises and warms.
sinks and warms.
74
A sheet of ice would float on a freshwater lake because ice
is more dense than water.
is less dense than water.
has less mass.
has less volume.
