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8th Physics Review 3 Week Assessment
Test Description: 3 week assessment review
Instructions: Answer all questions to get your test result.
1) If two teams are playing tug-o-war and Team A pulls with a force of 50 Newtons, and Team B pulls with a force of 70 Newtons, what will the outcome be?
A
The teams will move in the direction of the weaker force, with a force of 30 Newtons.
B
The people will move in the direction of the stronger force, with a force of 50 Newtons.
C
The teams will not move because the force is balanced.
D
The teams will move in the direction of the stronger force, with a force of 20 newtons.
2) How much force is needed to stop a bus moving 300 Newtons West.
A
300 N East
B
300 N South
C
300 N North
D
300 N West
3) Sodium carbonate is used to soften water. Its formula is Na2CO3. Which element is not in the formula?
A
NA
B
H
C
O
D
C
4) What instrument is used to measure force?
A
Metric Ruler
B
Triple beam balance
C
Spring Scale
D
Graduated Cylinder
5) Which statement best describes Newton's 3rd law of motion?
A
An object in motion will stay in motion unless acted on by an unbalanced force.
B
F= m x a
C
s=d/t
D
For every action there is an equal reaction.
6) Accroding to the laws of motion, motion will only occur if the force is---
A
Balanced
B
Strong
C
Unbalanced
D
weak
7) When Sally went sky diving, she first jumped from the airplane, then released her parachute to slow her fall. Why does the parachute slow Sally's fall?
A
It decreases air resistance
B
it increases gravity
C
It makes her lighter
D
It increases air resistance
8) A basketball bouncing off the gym floor is an example of which law?
A
Newton's 1st law
B
Newton's 3rd Law
C
Newton's 2nd law
9) According to Newton's 1st law (inertia) an object will stay in motion unless a force acts on it. What type of force must act on the object to make it move?
A
Outside
B
Balanced
C
Heavy
D
Unbalanced
10) Which formula represents Newton's 2nd law of motion?
A
d= s x t
B
f= m x a
C
s=d/t
D
M= f/a
11) Force is a--
A
push or pull
B
All of the above
C
unbalanced
D
balanced
12) Velocity is--
A
speed with direction
B
inertia
C
speed with acceleration
D
acceleration
13) Which example is best describing friction?
A
rubbing your hands together to create heat
B
rolling a bowling ball
C
A feather falling from the sky
D
a rocket taking off from earth
14) A track is 400 m around. If it takes a person 200 seconds to run one lap, how fast did they run the lap?
A
2 m/s
B
7 m/s
C
3 m/s
D
6 m/s
15) The fastest train in the world moves at 500 km/hr. How far will it go in 2 hours?
A
250 km
B
1200 km
C
900 km
D
1000 km
16) The unit used to measure force is--
A
Newton
B
Meters
C
Celsius
D
Gram
17) 2H4O In this chemical formula, how many Hydrogen atoms are present?
A
8
B
2
C
3
D
4
18) All elements in the same group have--
A
the same atomic mass.
B
similar chemical properties.
C
The same atomic number.
D
the same color.
19) In a chemical reaction between (KSO4) and (CaCl2) which element cannot be on the PRODUCT side?
A
K
B
Fe
C
Cl
D
S
20) Protons are found--
A
in the energy levels
B
paired up with electrons in energy levels.
C
in the nucleus of a cell
D
in the nucleus of an atom
*select an answer for all questions
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