how is weathering different from erosion?

weathering breaking down and erosion is movement of sediment

a group of atoms held together by chemical means

What is the nucleus of an atom?

atoms central region made of protons and neutrons

How are rocks classified

Classified based on composition

What is a medium? not a spiritual medium - in reference to waves :)

a substance through which a wave travels

subatomic particle with negative charge

why do somethings sink in water while others float?

Objects with densities greater than 1 will sink in water

combination of 2 or more substances not chemically combined

How are metamorphic rocks formed?

other rocks when it is affected by great pressure and heat

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2019-20 8th Grade 1st Sem Rev

96 termsStudBud Administration448 plays

8th grade science review for 1st semester topics. Scientific Method, Measurement, Waves and basics of Periodic table

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Questions 96

Answers

1
how is weathering different from erosion?
weathering is movement
weathering breaking down and erosion is movement of sediment
2
What is the volume of the graduated cylinder in mL?
0.8 ml
0.5 ml
0 ml
1 ml
3
A graduated cylinder starts at 40 mL of H₂0 then goes to 47 mL. What is the volume of object?
4 ml
7 ml
87 ml
47 ml
4
Did they follow the scientific method?
Yes
No
5
which substance is least dense?
corn oil
corn syrup
glycerin
water
6
What you are wanting to learn
materials
procedures
conclusion
purpose
7
What is a molecule?
smallest particle of an atom
has no charge and lives in nucleus
a subatomic particle with a negative charge
a group of atoms held together by chemical means
8
What is the volume of this solid?
1000 cm 2
1000 cm3
100 cm3
100 cm2
9
Mixing two clear liquids and a purple mass is created
chemical
physical
10
What is the mass of the balance?
10040.2 g
140.2 g
142 g
100402 g
11
Loudness of sound is determined by what?
frequency of sound
speed of sound
amplitude of sound
pitch of sound
12
lighting a match
physical
chemical
13
What is the nucleus of an atom?
atoms central region made of protons and neutrons
atoms central region made of protons and electrons
atoms central region made of isotopes and electrons
atoms central region made of neutrons and electrons
14
A wrench sits outside in the rain and turns red/orange with rust
chemical
physical
15
baking brownies
physical
chemical
16
How are rocks classified
Classified based on composition
Classified based on texture
Classified based on color
Classified based on weight
17
Amplitude is related to what?
frequency of wave
speed of wave
size of wave
energy of wave
18
What is a medium? not a spiritual medium - in reference to waves :)
another term to describe equlibrium
the highest or lowest point on a wave
a substance through which a wave travels
a regular and repeating pattern
19
What is the mass of the balance?
7.3 g
37 g
30 g
137.3 g
20
Did they use the scientific method?
Yes
No
21
The rock is dull.
Quantitative
Qualitative
22
Rocks contain a mixture of minerals that vary from place to place.
true
false
23
An elephant weighs a ton.
Quantitative
Qualitative
24
Rocks break down to
Fossils
Shells
Soil
Plants
25
An electron is
subatomic particle with neutral charge
subatomic particle with negative charge
subatomic particle with positive charge
hovers inside the nucleus
26
Which shows transmission?
D
A
B
C
27
Is this weathering?
True
False
28
What is the mass of the balance?
100904 g
190.4 g
194 g
10090.4 g
29
why do somethings sink in water while others float?
We really can't explain it. It just happens.
Objects with densities greater than 1 will sink in water
Objects with densities greater than 1 will float in water
Objects with densities less than 1 will sink in water
30
________ changes rocks.
Heat
None of the above
Pressure
Heat and pressure
31
prediction of the answer to your problem based on prior knowledge
conclusion
purpose
procedures
hypothesis
32
Are all rocks minerals?
sometimes
yes
no
33
A mixture is
a solution that can only be separated by chemical means
combination of 2 or more substances not chemically combined
solution is a compound consisting of 2 or more elements
made of 2 or more elements joined together chemically
34
What is the volume of this solid?
240 m3
48 m2
48 m3
240 m2
35
How are metamorphic rocks formed?
water after it comes back from the ground after a nice nap
by erosion with weathered materials, such as grass, and ice
by when magma cools in a rock because the lava got mad.
other rocks when it is affected by great pressure and heat
36
Which shows a compression?
A
B
37
data tables pictures and written notes taken while conducting an experiment.
data/analysis
purpose
materials
conclusion
38
If 30 ml of soda has a mass of 20 g what is its density?
1.5 g/ml
0
600 g/ml
0.67 g/ml
39
which wave has the higher frequency?
B
A
40
What do we know about the density of the ping pong ball?
It has the heaviest density
it has the lightest density
41
Different minerals have different streak colors.
True
False
42
How many protons?
39
19
0
20
43
What is the volume of the graduated cylinder in mL?
3.5 ml
3 ml
3.2 ml
32 ml
44
what is not a physical characteristic used to identify an element?
mass
melting point
boiling point
density
45
These rocks are formed by other rocks that have been changed.
igneous
sedimentary
metamorphic
46
Which shows absorption?
A
B
C
D
47
Where is the amplitude
C
E
A
B
48
If the mass of a cube is 24 g and its volume is 12 cm³ what is its density?
6 g/cm3
0.5 g/cm3
2 g/cm3
4 g/cm3
49
Where is the rest position?
E
C
A
B
50
detailed list of items needed to conduct the experiment
procedures
materials
hypothesis
data/analysis
51
A step by step instruction used to run an experiment
hypothesis
conclusion
purpose
procedures
52
Where is the trough
E
A
D
B
53
The container has smooth sides.
Quantitative
Qualitative
54
What is an electromagnetic wave?
a wave created by magnetic fields
all of the above
a wave created by electric fields
a wave that carries electromagnetic energy
55
Weathering and erosion both...
change the earth's surface
wash soil away
move rocks
change rocks
56
water turning into ice
chemical
physical
57
The sign has 8 sides.
Qualitative
Quantitative
58
cutting bread
physical
chemical
59
Mechanical/Physical or Chemical Weathering
Chemical
Neither
Mechanical-Physical
60
Mechanical or Chemical Weathering?
Mechanical
Chemical
Neighter
61
Which describes density best?
it is the heaviness of an object for its weight
it is mass added to volume of an object
it is the amount of mass in a certain volume of matter
it is the size of an object for its volume
62
How would you describe a wave?
a regular pattern of motion that transfers matter
a regular pattern of motion that transfers energy
an irregular movement that transfers matter
an irregular movement that transfers energy
63
A proton is
subatomic particle neutral in charge located in nucleus
subatomic particle negative in charge located in nucleus
subatomic particle positive in charge located in nucleus
found hovering outside the nucleus in a proton cloud
64
Where is the crest?
B
A
C
E
65
Which shows reflection?
A
B
D
C
66
Which statement describes a mechanical wave correctly?
light is a type of mechanical wave
a mechanical wave transfers matter, not energy
a mechanical wave can travel through a vacuum
a mechanical wave requires a medium to travel through
67
which wave has the longer wavelength?
B
A
68
Where is the wavelength
B
A
E
D
69
A group or family on the periodic table
horizontal rows determine physical & chemical characteristic
the vertical columns that determines a repeating pattern
is the horizontal row and determines a repeating pattern
vertical columns where elements share chemical properties
70
Which shows refraction?
B
A
D
C
71
Rocks are made up of minerals and are classified on the basis of ...
Their color
How they were formed
The internal arrangement of their atoms
How they feel
72
Which would you use to find the volume of an irregularly shaped object?
length x width x height
direct measurement
water displacement
a triple beam balance
73
Which must occur first: weathering or erosion?
weathering, rocks must break down before sediment can move
erosion, sediment must move before rocks break down
74
What is the volume of the graduated cylinder in mL?
8.5 ml
8 ml
8.7 ml
87 ml
75
rubbing alcohol evaporating
chemical
physical
76
How do Igneous Rocks form?
I don't know 🤔😓
erosion
Molten magma cooling and crystalizing
heat and pressure
77
What would you use to determine the mass of an object?
graduated cylinder
meter stick
triple beam balance
bathroom scale
78
When you dissolve salt into water the salt is known as a
solute
solubility
solvent
solution
79
rocks are broken down with water
False
True
80
What you decided happened during your experiment & if your hypothesis was correct or not
conclusion
hypothesis
materials
analysis/data
81
Erosion happens by means of...
water, fire, or rocks
snow, ice, or cold
water, ice, or wind
fire, light, or plants
82
which substance is most dense?
corn oil
water
corn syrup
glycerin
83
What do we know about the density of the black sphere?
its density is the same as the blue liquid
its density is greater than the blue liquid
it has the lightest density
It has the heaviest density
84
Which best describes frequency?
height of wave
time it takes to complete one wave
length of one complete wave
number of times a wave cycles in one second
85
All are processes of sedimentary rocks EXCEPT
Cooling
Compaction
Weathering
Erosion
86
Horizontal rows on the periodic table are called
families
intervals
periods
groups
87
What is the mass of the balance?
105.6 g
1056g
105 g
100 g
88
Which explains the electron cloud?
region hovering around nucleus where protons are
region hovering around nucleus where neutrons are
region hovering around nucleus where electrons are
the nucleus where electrons can be found
89
Are rocks and minerals the same?
False
True
90
Which would you use to find the volume of a rectangular object?
triple beam balance
meter stick
graduated cylinder
bathroom scale
91
A pure substance is
a substance that can't be broken down any more
a single compound that has definite properties
combination of 2 substances that aren't chemically combined
a solution
92
During an experiment on speed what actions could lead to measurement error?
counting down before releasing object
conducting multiple trials from each height
recording data in a table
using different hand positions to release each object
93
how are sedimentary rocks made?
Rocks fall off mountains
they aren't made they just exists
Weathering sand erosion
Minerals come together when sedimentation occurs.
94
There are more than ______ different minerals
200
100
10
4000
95
How many neutrons?
0
19
20
39
96
Do Weathering and Erosion work together?
False
True

2019-20 8th Grade 1st Sem Rev Flashcards | StudBud