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Worksheets8th Grade Chemistry and Force/Motion Review
Total questions: 34
Worksheet time: 1hrs 11mins
Name
Class
Date
1.
How does the motion of the roller coaster change as it travels from point W to X?
a)
The speed will decrease because balanced forces were acting on the roller coaster.
b)
The speed will decrease because unbalanced forces were acting on the roller coaster.
c)
The speed will increase because balanced forces were acting on the roller coaster.
d)
The speed will increase because unbalanced forces were acting on the roller coaster.
2.
How many atoms of Phosphorus are present in the compound Mg3(PO4)2 ?
a)
3
b)
4
c)
2
d)
8
3.
Which 3 elements belong in the same group?
a)
H, He, Li
b)
F, Cl, At
c)
Li, Be, F
d)
Ne, Cl, Se
4.
How many valence electrons does this atom have?
a)
3
b)
7
c)
17
d)
35
5.
Which of these have similar chemical properties?
a)
Atom 1 and Atom 2
b)
Atom 2 and Atom 3
c)
Atom 3 and Atom 4
d)
Atom 1 and Atom 4
6.
The graph represents
a)
No motion
b)
Constant velocity
c)
Acceleration
d)
Deceleration
7.
The graph represents
a)
no motion
b)
Constant velocity
c)
Acceleration
d)
negative acceleration
8.
The graph respresents
a)
No motion
b)
Constant Velocity
c)
Acceleration
d)
Deceleration
9.
The graph below represents
a)
Speed
b)
Velocity
c)
Acceleration
d)
Deceleration
10.
The graph represents
a)
Acceleration
b)
No motion
c)
Deceleration
d)
Constant Velocity
11.
How much time does it take for a car travelling at 65 miles/hour to travel 300 miles?
a)
4.6 hours
b)
0.22 hours
c)
19,500 hours
d)
none of the above
12.
What is happening at D?
a)
Stationary
b)
Accelerating
c)
Fast steady speed; moving away from the starting position
d)
Slower steady speed; moving away from the starting position
13.
What is happening at E?
a)
Stationary
b)
Accelerating
c)
Fast steady speed; moving away from the starting position
d)
Steady speed; returning to start position
14.
Which runner won the race?
a)
A
b)
B
c)
C
15.
When a car goes around a corner at 20 mph, why do we say it accelerates?
a)
The car is accelerating because of the velocity is constant
b)
The car accelerates because it's going 20 mph
c)
Cars always accelerate when they are in motion
d)
The car is accelerating because it's changing direction
16.
a)
Cars 1 and 2 traveled the same distance before coming to a stop.
b)
Car 2 traveled a greater distance in the first 4 seconds than Car 1.
c)
Car 1 traveled a greater distance in the first 4 seconds than Car 2.
d)
Cars 1 and 2 came to a stop after traveling for the same amount of time.
17.
What is this graph showing?
a)
Constant Speed
b)
Acceleration (speeding up)
c)
Acceleration (slowing down)
d)
No motion
18.
How much force is needed to accelerate a 3kg skateboard at 5m/s2.
a)
8N
b)
1.6N
c)
0.6N
d)
15N
19.
How much force is needed to accelerate a 25kg bowling ball at 2m/s2.
a)
50N
b)
5N
c)
12.5N
d)
100N
20.
Look at this scenario, which law does this represent?
a)
Law of Inertia
b)
Law of Force and Acceleration
c)
Law of Action-Reaction
d)
It doesn't represent a law
21.
What is the force on a 1000 kg elevator that is falling freely at 9.8 m/sec2
a)
102.04 n
b)
9,800 n
c)
980 n
d)
103 n
22.
A force of 250 N is applied to an object that accelerates at a rate of 5 m/sec2. What is the mass of the object?
a)
100kg
b)
1,250kg
c)
50kg
d)
5kg
23.
This triangle is used to determine speed.
a)
True
b)
False
24.
Which graph represents zero acceleration (constant velocity)?
a)
A
b)
B
c)
C
d)
D
25.
Which graph shows the object standing still?
a)
A
b)
B
c)
C
d)
D
26.
Which graph represents the greatest acceleration?
a)
A
b)
B
c)
C
d)
D
27.
Why is the following chemical equation not balanced?
H2 + O2 --> H2O
H2 + O2 --> H2O
a)
each side of the equation has a different number of oxygen atoms
b)
each side of the equation has a different number of hydrogen atoms
c)
each side has the same mass
28.
Which of the following is an unbalanced equation?
a)
CaCO3 --> CaO + CO2
b)
PbO2 + 2H2-->2Pb + H2O
c)
2Na+ 2H2O-->2NaOH + H2
d)
CS2 + 2O2 --> CO2 + 2SO2
29.
You and your friend, are playing tug of war. Your friend pulls with a force of 55 N, to the rights. You pull with a force of 65 N, to the left. What is the net force on the rope?
a)
10 n, to the left
b)
20 N
c)
10 N, to the left
d)
10 N, to the right
30.
What is our school's mascot?
a)
Bearcat
b)
Bobcat
c)
Bear
d)
Lion
31.
What color is the Grinch?
a)
purple
b)
green
c)
pink
d)
brown
32.
What are one of the names of Santa's reindeer?
a)
lanser
b)
comet
c)
bitson
d)
puckit
33.
Who is this?
a)
Chuck the Elf
b)
Friend the Elf
c)
Buddy the Elf
d)
Barry the Elf
34.
What kind of cookies are these?
a)
Ginerbeard cookies
b)
peanut butter cookies
c)
skittles cookies
d)
reese cookies
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