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STAAR Review 8th grade

Total questions: 75

Worksheet time: 2hrs 35mins

Name
Class
Date
1.

According to the graph how far does the person travel in the first 5 seconds?

a)

2 m

b)

10 m

c)

0 m

d)

5 m

2.
What is the person doing from 5 seconds to 10 seconds?
a)
Walking 
b)
Running
c)
Standing Still 
d)
Walking Fast
3.
How far will a person go if they jog for 2 hours at a speed of 12 km/hr?
a)
6 km
b)
0.5 km
c)
10 km
d)
24 km
4.
What does this graph represent?
a)
Constant Speed
b)
Acceleration
c)
Not moving
5.
Which runner stopped for a rest?
a)
Albert
b)
Bob
c)
Charlie
6.
This graph demonstrates an object that is -
a)
At a constant speed
b)
Increasing speed
c)
Decreasing speed
d)
Stationary
7.
Which graph is showing a faster constant speed?
a)
B
b)
F
c)
They show the same speed
8.
Which graph is showing acceleration (getting faster)
a)
D
b)
E
c)
both D and E
d)
neither D or E
9.
This graph demonstrates an object that is -
a)
At a constant speed
b)
Increasing speed
c)
Decreasing speed
d)
Stationary
10.
This graph demonstrates an object that is -
a)
At a constant speed
b)
Increasing speed
c)
Decreasing speed
d)
Stationary
11.
This graph demonstrates an object that is -
a)
At a constant speed
b)
Increasing speed
c)
Decreasing speed
d)
Stationary
12.
What is Newton's Third Law?
a)
Object in motion stays in motion and an object at rest stays at rest unless acted on by a outside force
b)
Force = mass x acceleration
c)
For every action there is an equal and opposite reaction
13.
According to Newton's second law, if you increase the force applied to an object :
a)
it accelerates more
b)
it doesn't move
c)
you get more inertia
d)
it decelerates
14.
What Newtons law does this picture represent
a)
Newtons 2nd law 
b)
Law of gravity 
c)
Newtons 1st law
d)
Newtons 5th law
15.
When something has speed in a certain direction it is called ___________.
a)
motion
b)
position
c)
velocity
d)
speed
16.
Acceleration of an object happens when things ________
a)
slow down
b)
go faster
c)
change direction (turn)
d)
All of the above
17.
LT4: The graph shows Ashley riding her bike to Maria's house. 
What is occurring from point A to point B?
a)
they are traveling at a constant speed
b)
they are decreasing in speed
c)
they stopped to take a break
18.
LT4: The graph shows Ashley riding her bike to Maria's house. 
What was occurring from point B to point C?
a)
She was increasing her speed.
b)
She stopped for 4 minutes
c)
She was decreasing in speed
19.

Which arrow shows the direction of the friction force?

a)

A

b)

B

c)

C

d)

D

20.

45 m/s2 represents the ___________________________.

a)

mass

b)

force

c)

acceleration

d)

weight

21.

A car speeding up to get through a yellow traffic light is an example of .... (select all that apply)

a)

balanced Forces

b)

unbalanced Forces

c)

acceleration

22.

When the force on a car is doubled, the acceleration is doubled.

a)

Newton's 1st Law

b)

Newton's 2nd Law

c)

Newton's 3rd Law

23.

Which of Newton's laws are illustrated with a rocket launch?

a)

1st Law, the Law of Inertia.

b)

2nd Law, the Law of Acceleration.

c)

3rd Law, the Law of Action - Reaction

24.

A skater pushes another skater forward, but the one pushing moves backwards.

a)

Newton's 1st Law

b)

Newton's 2nd Law

c)

Newton's 3rd Law

25.

You are carrying a lunch tray when you bump into the edge of a table. Although the tray did not tip, your milk falls off of the front of the tray.

a)

Newton's

1st

Law of Motion

b)

Newton's

2nd

Law of Motion

c)

Newton's

3rd

Law of Motion

26.

You push against a wall and the wall is pushing back on you.

a)

Newton's 1st Law

b)

Newton's 2nd Law

c)

Newton's 3rd Law

27.

Which law best explains why more force must be applied to the bowling ball to make it accelerate at the same rate as the tennis ball.

a)

Newton's 1st Law

b)

Newton's 2nd Law

c)

Newton's 3rd Law

28.

What is the Net Force and the direction of the object's movement as a result of the net force?

a)

5N, Right

b)

5N, Left

c)

9N, Right

d)

9N, Left

29.

What is the Net Force and the direction of the object's movement as a result of the net force?

a)

9N, Right

b)

9N, Left

c)

3N, Right

d)

3N, Left

30.

What is the Net Force and the direction of the object's movement as a result of the net force?

a)

8N, Right

b)

8N, Left

c)

0N, Right

d)

0N, No Movement

31.

Speed = _______________

a)

Distance + time

b)

Distance – time

c)

Distance x time

d)

Distance / time

32.

Velocity = _______________

a)

Speed – direction

b)

Speed + direction

c)

Speed x direction

d)

Speed / direction

33.

What is the bottom layer of the an energy pyramid?

a)

producer

b)

tertiary consumer

c)

Secondary consumer

d)

primary consumer

34.

What would happen if their were no producers?

a)

Every population would grow larger

b)

Everything would die out

c)

The animals would make their own food

35.

What would happen if the primary consumers died out?

a)

the producers would grow and the secondary and tertiary consumers would die

b)

producers would die out

c)

consumers would grow

36.
In this energy pyramid, what is the proper name for ANY ORGANISM ABOVE THE PRODUCER LEVEL?
a)
decomposers
b)
consumers
c)
producers
d)
omnivores
37.
About how much percent of energy is passed on from one organism to to the next on an energy pyramid?
a)
100 percent of all energy gets passed
b)
45 percent of all energy gets passed
c)
10 percent of all energy gets passed
d)
0 percent of all energy gets passed
38.
Which moon phases are "crescents"?
a)
1 and 5
b)
2 and 8
c)
4 and 6
d)
3 and 7
39.
Name the moon phase
a)
waning crescent
b)
waxing crescent
c)
waning gibbous
d)
waxing gibbous
40.
What Moon phase is this?
a)
Waxing Crescent
b)
Waning Gibbous
c)
Waning Crescent
d)
Waxing Gibbous
41.
What Moon phase is this?
a)
Waning Crescent
b)
Waxing Crescent
c)
Waxing Gibbous
d)
Waning Gibbous
42.
Which moon phases are "waxing"?
a)
1 and 2
b)
2 and 4
c)
6 and 8
d)
1 and 5
43.
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
44.
What phase of the moon would be visible when the moon is at position 3? 
a)
new moon
b)
first quarter
c)
full moon
d)
third quarter
45.
What phase of the moon would be visible when the moon is at position 1? 
a)
new moon
b)
first quarter
c)
full moon
d)
third quarter
46.
What moon phase came right BEFORE this one?
a)
First Quarter
b)
Last Quarter
c)
New Moon
d)
Full Moon
47.
Name the moon phase that would come AFTER this moon.
a)
waning crescent
b)
waxing crescent
c)
waning gibbous
d)
waxing gibbous
48.

The model shows Earth in several positions relative to the sun.


In which position is it winter in North America?

a)

Position 1, because North America receives the most direct sun

b)

Position 2, because North America is tilted toward the sun

c)

Position 3, because North America is parallel to the sun

d)

Position 4, because North America is tilted away from the sun

49.
How many atoms of lead (Pb) are in Pb(NO₃)₂?
a)
1
b)
2
c)
3
d)
6
50.

How many Carbon atoms on the Reactant side of the equation?

5C4O8→10C+2C5O20

a)

4

b)

5

c)

10

d)

20

51.

How many Carbon atoms on the Product side of the equation?

5C4O8→2C5O20

a)

4

b)

5

c)

10

d)

20

52.

Identify if the following equation is unbalanced or balanced.

4K+P3→3KP+K

a)

Unbalanced

b)

Balanced

53.

Identify if the following equation is unbalanced or balanced.

O3+2C→3OC

a)

Unbalanced

b)

Balanced

54.

Identify if the following equation is unbalanced or balanced.

2(N)2→4N

a)

Unbalanced

b)

Balanced

55.
_______ and _______ are located inside of the nucleus.
a)
Electrons and Protons
b)
Protons and Neutrons
c)
Neutrons and Electrons
56.
Carbon has an atomic number of 6.  What can you conclude about carbon from this fact?
a)
It has six protons
b)
It has six neutrons
c)
It has six electrons
d)
It has six positrons
57.
How many valence electrons?
a)
2
b)
3
c)
5
d)
10
58.

Which elements would have a similar reactivity?

a)

Nitrogen & Chlorine

b)

Chlorine & Sodium

c)

Nitrogen & Neon

d)

Lithium & Sodium

59.
How many valence electrons are found in atoms of group 15?
a)
4
b)
5
c)
2
d)
3
60.

Which elements have the most similar chemical properties?

a)

boron and carbon

b)

oxygen and sulfur

c)

aluminum and bromine

d)

argon and silicon

61.

How many energy levels are in an atom of aluminum, Al?

a)

1

b)

3

c)

4

d)

2

62.
What is the mass number of this atom?
a)
1
b)
3
c)
4
d)
7
63.
What is the atomic number of this atom?
a)
2
b)
4
c)
6
d)
none of the above
64.

H2

a)

Element

b)

Compound

c)

Mixture

65.

MgCl2

a)

Element

b)

Compound

c)

Mixture

66.
How many Protons are in one atom of Lithium?
a)
3
b)
6
c)
7
d)
6.941
67.
How many Neutrons are in one atom of Lithium?
a)
6.941
b)
7
c)
3
d)
4
68.

Which box has a higher density?

a)

A

b)

B

c)

They are the same

69.

Calculate the density in the following question: A star has a mass of 15 g and a volume of 25 mL.

a)

0.7 g/mL

b)

0.6 g/mL

c)

0.5 g/mL

d)

0.4 g/mL

70.

Which subatomic particle tells the identity of an element?

a)

Electron

b)

Proton

c)

Neutron

d)

Nucleus

71.

How many neutrons does Sodium (Na) have?

a)

11

b)

23

c)

34

d)

12

72.

The atomic mass is:

a)

number of protons in the nucleus

b)

number of neutrons in the nucleus

c)

number of both protons and neutrons

d)

number of electrons

73.
Name the boundary
a)
convergent boundary
b)
divergent boundary
c)
transform boundary
d)
sergent boundary
74.
Name the boundary
a)
convergent boundary
b)
divergent boundary
c)
transform boundary
d)
sergent boundary
75.

a)

divergent boundary

b)

convergent boundary

c)

transform boundary

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