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8TH GRADE SCIENCE REVIEW Flashcards | StudBud
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8TH GRADE SCIENCE REVIEW
8TH GRADE SCIENCE REVIEW
40 terms
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Review for practice Staar test (all topics except Universe and Relationships in the Environment)
Flashcards
40 cards
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Practice quiz
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Questions
40
Answers
1
When the student jumps off the sled, which way will the sled go?
north
east
south
west
2
If an object has a mass of 2 g and a volume of 10 cm
3
, what is the density of the object?
5 g/cm3
0.2 g/cm3
12 g/cm3
20 g/cm3
3
Which statement correctly describes spring tides?
Tides which occur in spring.
Tides which occur at first and third quarter moons.
Tides which occur at new and full moons.
Tides which occur at waxing and waning crescent moons.
4
An atom has 8 protons, 9 neutrons, and 8 electrons. What is the charge of the atom's nucleus?
-1
+8
+1
+17
5
How many tide changes occur each day?
8
4
2
6
6
How many atoms in a molecule of water, H
2
O?
2
1
4
3
7
Which crustal feature would form at this boundary?
Mid-ocean ridges
Volcanos
Pangaea
Faults
8
Which type of plate boundary would result in the formation of a mountain range?
transform
divergent
lithospheric
convergent
9
When running long distances, muscles need more oxygen. What body system gets O
2
to muscles?
respiratory
nervous
digestive
circulatory
10
Sea floor spreading occurs because...
Plates at a convergent plate are boundary colliding.
Plates at a transform boundary are sliding past each other.
One plates is being destroyed as it subducts.
Plates at a divergent plate boundary are spreading apart.
11
The phase of the moon after new moon is the ____________.
Third Quarter
Full Moon
Waxing crescent
First Quarter
12
Which phase of the moon occurs AFTER the moon shown?
First quarter
Waning gibbous
Waxing gibbous
Waxing crescent
13
What is the net force?
2 N to the right
3 N to the left
5 N to the right
2 N to the left
14
The pickup truck has a changing velocity because...
it is traveling in an opposite direction.
it needs a large amount of force to move.
it can accelerate faster than the cars.
it is traveling along a curve.
15
What is the energy transformation in an electric fan?
electrical to mechanical
chemical to mechanical
mechanical to electrical
electrical to thermal
16
How many valence electrons in this atom?
can not tell
2
5
3
17
Which best describes a proton?
Subatomic particle inside the nucleus with negative charge
Subatomic particle outside the nucleus with negative charge
Subatomic particle inside the nucleus with positive charge
Subatomic particle outside the nucleus with positive charge
18
Which of the following is evidence of a chemical reaction?
Sugar dissolving in water
Milk clumping when vinegar is added
Ice melting
Tongue turning blue after eating a blue popsicle
19
Which describes a dry, cold air mass?
Maritime polar
Maritime tropical
Continental tropical
Continental polar
20
What do elements in the same period have in common?
Same number of valence electrons
Same number of energy levels (rings) in their atoms
Same number of protons
Same reactivity
21
Which of the following is NOT a type of plate boundary?
Intersecting
Transform
Convergent
Divergent
22
The warmer weather of summer in the Northern Hemisphere is due to which of the following?
The melting of ice raises the sea level in this area.
The sun emits the greatest amount of energy at this time.
Earth is closest to the sun in this part of its revolution.
The Northern Hemisphere is tilted toward the sun.
23
How fast was Mrs. Bailey driving the Chevy S10 SS if she went 400 miles in 3 hours 3o minutes?
about 121 mph
about 114 mph
she was driving the posted speed limit
about 133 mph
24
What type of heat transfer involves warm air rising and cool air sinking?
convection
radiation
conduction
insulation
25
Earthquakes occur in California at the San Andreas Fault. What type of plate boundary is here?
diverse boundary
divergent boundary
transform boundary
convergent boundary
26
What special kind of tide occurs with this alignment of the sun, moon, and Earth?
High
Low
Spring
Neap
27
This is an atom of what element?
Nitrogen
Beryllium
Lithium
No way to know
28
The process that causes the movement of the earth’s plates is ________.
convection
radiation
conduction
tarnation
29
Based on the map, which city will have decreasing temperatures in the next few days?
Houston
Denver
Atlanta
Minneapolis
30
How many days after a full moon does a new moon appear?
7
10
30
14
31
Where is the potential energy of the water the greatest?
Y
W
X
Z
32
The uneven heating of the Earth results in which of the following?
warm temperatures at the equator and cold at the poles
wind
ocean currents
all are a result!
33
What is the contour interval of the topographic map shown?
5
25
10
20
34
What is the acceleration? (F=m x a)
1 m/s/s
2.67 m/s/s
0.67 m/s/s
1.5 m/s/s
35
Wegener proposed the theory of continental drift based on all of the following
except
?
The continents on Earth have a fixed position.
The continents appear to fit together like a puzzle.
Similar fossils are found on continents separated by oceans.
Rock formations appear to connect continents.
36
What lunar phase would be seen from Earth?
New Moon
1st quarter
Full moon
3rd quarter
37
Which is a true statement based on the square from the periodic table?
A sulfur atom has 16 protons.
A sulfur atom has 32 protons.
A sulfur atom has 32 neutrons.
A sulfur atom has 8 protons.
38
Which of these causes the change from day to night on Earth?
Revolution of the moon around Earth
The changing distance between Earth and the Sun.
Earth's rotation on its axis
Earth being tilted on its axis
39
What is the source of all energy on Earth?
water cycle
Coriolis effect
moon
sun
40
Earth's movement around the sun is called...
Tilt
Rotation
Ellipse
Revolution
