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8th Science STAAR Review

Total questions: 100

Worksheet time: 1hrs 15mins

Name
Class
Date
1.

A horizontal row of elements in the periodic table

a)

Molecule

b)

Period

c)

Family

d)

Atom

2.

What is one way Neutrons are different from electrons?

a)

they both are negative

b)

neutrons have no charge, while electrons have a negative charge

c)

Both are in the nucleus( center of atom)

d)

Electrons are inside nucleus and neutrons are outside the nucleus.

3.

What is the atomic number?

a)

35

b)

18

c)

17

d)

52

4.

How many neutrons does Chlorine have?

a)

18

b)

17

c)

35

d)

52

5.
How many Hydrogen are in 4H2O?
a)
6
b)
8
c)
2
d)
4
6.
How many Magnesium are in 10MgCl2?
a)
10
b)
5
c)
20
7.
2H2 + O2 ----> 2H2O What is the product?
a)
------>
b)
2H2O
c)
2H2+ O2
8.
2H2 + O2 --------> 2H2O What  are the reactants?
a)
----->
b)
2H2O
c)
2H2 +O2
9.
How many O's are in Al₂(SO₄)₃
a)
4
b)
12
c)
7
d)
24
10.
Number of H in 3(NH₄)₂CrO₄
a)
4
b)
2
c)
8
d)
24
11.
What is the name of the group that never reacts--ever ever they are stable with a full outermost ring!!!
a)
noble gases
b)
transition
c)
halogens
d)
borons
12.
What is the chemical symbol for Lithium?
a)
H
b)
He
c)
Li
d)
N
13.
The number at the bottom of each square on the periodic table is the ...
a)
atomic number
b)
atomic mass
c)
chemical symbol
d)
element name
14.
The number at the top of each square on the periodic table is the ...
a)
atomic number
b)
atomic mass
c)
Chemical Symbol
d)
Element Name
15.

I am shiny

a)

Metal

b)

Nonmetal

c)

Metalloid

16.

I am malleable

a)

Metal

b)

Nonmetal

c)

Metalloid

17.

I am a good conductor of electricity and/or heat

a)

Metals

b)

Nonmetals

c)

Metalloids

18.

I am ductile - I can be draw into wires

a)

Metals

b)

Nonmetals

c)

Metalloids

19.

I could be shiny OR dull

a)

Metals

b)

Nonmetals

c)

Metalloids

20.

I can be nonmalleable or malleable

a)

Metals

b)

Nonmetals

c)

Metalloids

21.

I am a semi-conductor

a)

Metals

b)

Nonmetals

c)

Metalloids

22.

I am only dull

a)

Metals

b)

Nonmetals

c)

Metalloids

23.

I am NOT malleable

a)

Metals

b)

Nonmetals

c)

Metalloids

24.
Frank has a paper clip. It has a mass of 9g and a volume of 3cm3. What is its density?
a)
3 g/cm3
b)
1/3 g/cm3
c)
27 g/cm3
d)
39 g/cm3
25.
How much water has been displaced in the image shown?
a)
40 mL
b)
65 mL
c)
20 mL
d)
25 mL
26.

Find the volume if a substance has a density of 19.3g/cm3 and a mass of 10g.

a)

.52cm3

b)

193cm3

c)

1.93cm3

d)

29.3cm3

27.
What is the density of water?
a)
0 g/ml
b)
1 g/ml
c)
10 g/ml
d)
100 g/ml
28.
Find the volume of the given figure.
a)
308.9 cm3
b)
308.2 cm3
c)
312.8 cm3
d)
302.9 cm3
29.

What is the net force?

a)

3 N

b)

3 N, right

c)

17 N, right

d)

3 N, left

30.
What is the net force?
a)
20 N 
b)
0 N 
c)
400 N 
d)
40 N 
31.

What is the unit to MEASURE force?

a)

Kilogram

b)

Meter

c)

Pounds

d)

Newton

32.

A ____________ is a push or a pull on an object.

a)

friction

b)

force

c)

magnet

d)

gravity

33.
What is the acceleration of a 50 kg object pushed with a force of 500 newtons? To solve this problem you must do - 
a)
500 ÷ 50
b)
50 ÷ 500
c)
500 x 50
34.
A 50 kg skater pushed by a friend accelerates 5 m/s2.  How much force did the friend apply? To solve this problem you must do - 
a)
50 ÷ 5
b)
5 ÷ 50
c)
50 x 5
35.
A skier needs to apply a force of 132 N to accelerate at a rate of 2 m/s2. What is the mass of the skier? To solve this problem you must do - 
a)
132 ÷ 2
b)
2 ÷ 132
c)
132 x 2
36.
If you travel 10 miles in 5 minutes, what is your speed?
a)
10 mi/min
b)
15 mi/min
c)
50 mi/min
d)
2 mi/min
37.

At what point is the speed the greatest?

a)

C-D

b)

B-C

c)

A-B

d)

D-E

38.

Match the graph to the description:

"The car is slowing down."

a)
b)
c)
d)
39.

What is this graph showing?

a)

Gradually slowing down

b)

Gradually speeding up

c)

Constant speed

d)

Stopped

40.

D = 10 meters

Time = 2 seconds

What is the Speed?

Hint: S = D÷TS\ =\ D\div T  

a)

10 m/s 

b)

5 m/s 

c)

 2 m/s

d)

 20 m/s

41.

Speed = 20 miles/hour

Time = 2 hours

Distance = ?

Hint:  Use the Density Triangle.

a)

40 miles

b)

 0.1 miles

c)

20 miles 

d)

 10 miles

42.
This symbol represents
a)
a cold front
b)
an occluded front 
c)
a stationary front
d)
a warm front
43.
What direction is the cold front moving?
a)
Northwest
b)
Southeast
c)
Northeast
d)
Southwest
44.

What front does this symbol represent?

a)

warm front

b)

cold front

c)

stationary front

d)

occluded front

45.

What type of front does this symbol represent?

a)

warm front

b)

cold front

c)

stationary front

d)

occluded front

46.

The cold front is moving

a)

east and southeast

b)

west and northwest

c)

north

d)

south

47.
What Moon phase is this?
a)
Old Moon
b)
Far Side of the Moon
c)
New Moon
d)
Waxing Gibbous
48.
What Moon phase is this?
a)
Waning Crescent
b)
Waxing Crescent
c)
Waxing Gibbous
d)
Waning Gibbous
49.
What Moon phase is this?
a)
Full Moon
b)
Waxing Gibbous
c)
New Moon
d)
Half Moon
50.
What Moon phase is this?
a)
Waxing Crescent
b)
Waning Gibbous
c)
Waning Crescent
d)
Waxing Gibbous
51.
Name the moon phase
a)
waning crescent
b)
waxing crescent
c)
waning gibbous
d)
waxing gibbous
52.
Name the moon phase
a)
First Quarter
b)
Last Quarter
c)
New Moon
d)
Full Moon
53.
Name the moon phase
a)
First Quarter
b)
Last (3rd) Quarter
c)
New Moon
d)
Full Moon
54.
Which moon phases are "crescents"?
a)
1 and 5
b)
2 and 8
c)
4 and 6
d)
3 and 7
55.
Which moon phases are "gibbous"?
a)
1 and 5
b)
2 and 8
c)
4 and 6
d)
3 and 7
56.

The cycle of the moon lasts about ___________.

a)

15 days

b)

7 days

c)

27-28 days

d)

30-31 days

57.
What moon phase would be seen from Earth when the moon is at position 5? 
a)
new moon
b)
first quarter
c)
full moon
d)
third quarter
58.
Define Full Moon
a)
None of moon is visible
b)
Half moon phase is visible
c)
Complete moon face is visible
d)
Less Than half of moon is visible
59.
Define New Moon
a)
None of moon is visible from Earth
b)
All of moon visible from Earth
c)
Moon is 1/2 visible from Earth
d)
Moon is more than Half Visible from Earth
60.
What is the highest elevation on this map?
a)
Over 320 meters
b)
Over 450 meters
c)
Over 220 meters
d)
Over 380 meters
61.
What feature is at the arrow?
a)
volcano
b)
mountain
c)
cliff
d)
river
62.
If contour lines are close together, then the slope is
a)
gentle
b)
steep
c)
flat
d)
going up and down
63.
What do contour lines that are farther apart represent?
a)
waterfall
b)
steep area
c)
gentle slope
d)
river
64.
What is the elevation of point B?
a)
800 ft
b)
850 ft
c)
900 ft
d)
1000 ft
65.

Which side is steeper?

a)

The left side of the hill

b)

The right side of the hill

66.
Determine the contour interval:
a)
5 m
b)
10 m
c)
15 m
d)
20 m
67.

What kind of plate boundary is shown here?

a)

Divergent

b)

Convergent

c)

Transform

d)

Strike Slip

68.

What kind of plate boundary is shown here?

a)

Divergent

b)

Convergent

c)

Transform

d)

Submergent

69.

What kind of plate boundary is shown here?

a)

Divergent

b)

Convergent

c)

Transform

d)

Strike Slip

70.

What geologic feature/event will most likely be found at a transform boundary?

a)

Earthquakes

b)

Volcanoes

c)

Mountains

d)

Rift Valleys

71.

What geologic feature/event would most likely occur at a divergent boundary between two oceanic plates?

a)

Rift Valley

b)

Mid-Ocean Ridge

c)

Island Arc

d)

Flat Land

72.

What geologic feature would most likely be found at a convergent boundary between two continental plates?

a)

Volcano

b)

Rift Valley

c)

Mountain

d)

Island Arc

73.

A subduction zone is formed...

a)

when a more dense plate sinks below a less dense plate

b)

at EVERY type of convergent boundary

c)

at EVERY type of divergent boundary

d)

when a less dense plate sinks below a more dense plate

74.

What is the "magic" that is happening in the mantle that helps move the lithospheric plates?

a)

Convection

b)

Radiation

c)

Condensation

d)

Conduction

75.

Aside from Earthquakes, what is the only other thing you will find at transform boundaries?

a)

Volcanoes

b)

Subduction Zones

c)

Folded Mountains

d)

Fault Lines

76.
In the diagram given, what happens as we move to the left?
a)
Stars Get Larger
b)
Stars get Colder
c)
Stars get hotter
77.
Which of these stars is hottest?
a)
Red Star
b)
Yellow Star
c)
Orange Star
d)
Blue Star
78.
Which star is the coldest?
a)
Yellow Star
b)
Red Star
c)
Orange Star
d)
Blue Star
79.
Which category is our Sun located in?
a)
White Dwarfs
b)
Supergiants
c)
Main Sequence
d)
Giants
80.
Red stars are the _____________.
a)
hottest
b)
coolest
c)
biggest
d)
brightest
81.
Look at the H-R diagram. Which star is
sort of cool, dim (not too much light), and red?
a)
Betelguse
b)
Sirius B
c)
Procyon B
d)
Barnard's star
82.

For a black hole to form...

a)

The gravitational force has to be stronger than the force of the supernova.

b)

The force of the supernova has to be stronger than the gravitational force.

83.

Which law of motion says that you must push or pull objects harder if they have more mass?

a)

1st

b)

2nd

c)

3rd

d)

4th

84.

Letting go of a balloon full of air is demonstrating Newton's ______ _______ ________ _________ because the air comes out of the back and the balloon moves forward.

a)

1st law of motion

b)

2nd law of motion

c)

3rd law of motion

d)

13th law of motion

85.

What law is best described by inertia?

a)

1st

b)

2nd

c)

3rd

d)

law of conservation of mass

86.

A person not paying attention while skateboarding hits a rock. The skateboard stops...they don't.

a)

The Law of Inertia (1st law)

b)

The Law of Acceleration (2nd law)

c)

The Law of Conservation of Momentum

d)

Action Reaction Law (3rd law)

87.

What is Newton's First Law

a)

F=ma

b)

Every action has an equal and opposite reaction

c)

An object at rest stays at rest, an object in motion stays in motion.

d)

Friction

88.

Newton's third law states that any action will have a(n) _______ and ______ reaction

a)

Equal and similar

b)

Equal and opposite

c)

Equal and different

d)

Greater and opposite

89.
In winter, the axis of the earth is pointed away or toward the sun?
a)
towards
b)
up
c)
down
d)
away
90.
Why is the Equator warmest?
a)
Because it is closest to the sun.
b)
Because it receives the most direct sunlight
c)
Because no clouds form here.
d)
Because it is far from the sun
91.
Which season is taking place in the Northern Hemisphere in Position 1?
a)
Winter
b)
Spring
c)
Summer
d)
Fall
92.
Which season is taking place in the Northern Hemisphere in Position 3?
a)
Winter
b)
Spring
c)
Summer
d)
Fall
93.
If its ____ in the Northern hemisphere, then its fall in the Southern hemisphere. 
a)
spring
b)
summer
c)
fall
d)
winter
94.

What quantity can you calculate if you know that a car travels 30 km in 20 min?

a)

average speed

b)

direction

c)

velocity

d)

instantaneous speed

95.

The rate at which velocity changes is...

a)

acceleration

b)

direction

c)

speed

d)

velocity

96.
What is the equation to calculate time?
a)
time = speed/distance
b)
time = distance/speed 
c)
time = speed x distance 
d)
time = distance x speed
97.
Which of the following is a unit for acceleration?
a)
km/s
b)
m/s2
c)
mi/hr
d)
ft
98.

A ___________ is a boundary separating two types of weather.

a)

storm

b)

climate

c)

front

d)

fence

99.

Low pressure systems bring _______ while high pressure systems bring ________.

a)

sunny skies, clouds

b)

wind and clouds, sunny skies

c)

snow, warm weather

d)

sunny skies, wind

100.

The formula for Speed is...

a)

Speed = distance/ time

b)

Speed = time/ distance

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