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WorksheetsMIDTERM EXAM PHYSICS LAB
Total questions: 50
Worksheet time: 37mins
Which of the following statements best describes the importance of scientific notation?
It is used to standardized writing numbers in the powers-of-ten.
It is used to report values with uniform format.
It is used to accurately report data from laboratory experiments.
It is used to easily write very small and very large quantities.
How many significant figures are there in 603.010 m?
3
5
6
4
6 022 140 760 000 000 000 000 mol⁻¹. How will you write it in the standard form of scientific notation with four significant figures?
6.022 ✕ 10²³ mol⁻¹
60.221 ✕ 10²² mol⁻¹
6.0222 ✕ 10⁻²³ mol⁻¹
6 023 ✕ 10¹⁸ mol⁻¹
What is the volume of a block of steel with a length of 10.6 cm, width of 7.32 cm and a height of 5.10 cm?
395
395.7
396
400.0
The speed of a car can be calculated by dividing the distance traveled by the unit time. What is the speed of the car in m/s if it traveled 5 300 m in 45 min?
1.96 m/s
2.0 m/s
120 m/s
7100 m/s
Which of the following quantifies the doubt that exists in any reported value of measurement?
Precision
Error
Precision
Uncertainty
A pendulum was reported to have a period of 2.25 ± 0.05 s. Which among the values below fall in this range?
2.10 s
2.31
2.29 s
2.09 s
Which of the following terms is defined as the difference between the true value and the measured value?
Mistake
Error
Deviation
Precision
How will you correct your measurement if the first 1 cm of your ruler is cut off?
Proceed with the measurement accordingly since 1 cm is very negligible.
Start measuring at the 2-cm mark then subtract 1 cm from the final measurement.
Use a more precise measuring device such as a micrometer caliper.
Use another measuring device with complete scale divisions.
The mass of a grain of sand is approximately 0.000000031 grams. How will you write it in the standard form of scientific notation?
0.31 ✕ 10⁻⁷ g
3.1 ✕ 10⁻⁸ g
3.1 ✕ 10⁸ g
0.0031 ✕ 10⁵ g
____________is the fundamental quantity
length
area
volume
none
Physical quantity are_______________
quantity that are being measured
comparing unknown quantity with quantity
dependent on each other
none
SI unit of mass is_______________
kilogram
newton
metre
none
SI unit of time is_____________
second
metre
kg
none
________________is the device used to measure perimeter of play ground
beam balance
measuring tape
ruler
none
mass of an apple is _____________
beam balance
measuring tape
ruler
none
Where should I throw paper or solids?
In the trash or proper waste container
Sink
Backpack
Locker
When performing a laboratory assignment…
read procedure beforehand to understand what to do
follow the teacher’s instructions
look out not only for your safety but also that of partners
none of the first three answers
all of the first three answers
The goal of lab safety is to insure that the individuals in the class are safe from harm and exposure to hazards.
True
False
Metersticks are used in physics as
measuring devices
Swords
Bats
Hockey sticks
It is used to measure the temperature of an object or a substance.
barometer
thermometer
hygrometer
milliliter
Which laboratory apparatus would you use to measure 75ml of water accurately?
The laboratory apparatus above are used to measure _____________ .
mass
length
volume
temperature
It is also used in some instances to clamp a couple of support rods together, or to clamp an iron ring or other attachment to a metal bar.
iron stand
meter stick
wire gauze
burette
Which of the following velocity vs. time graphs corresponds to the distance vs. time graph shown?
Which of the following acceleration vs. time graphs represent an object in uniformly accelerated motion?
Which of the following cases is considered as uniformly accelerated motion?
I. A car that slows down by 5 m/s every second.
II. A falling apple that picks up a speed of 9.8 m/s every second.
III. A fun run participant that speeds up and slows down at certain points throughout his run.
II only
III only
I and II
II and III
If a runner accelerates from rest at a rate of 1.5 m/s2, what will its velocity be after 4 seconds?
2 m/s
4 m/s
6 m/s
8 m/s
A car travelling at 20 m/s approaches to stop for a restaurant ahead. If the driver slams on the brakes with an acceleration of -5 m/s², what will be his stopping distance?
30 m
40 m
50 m
60 m
If an MRT train covers 10 km within 7.5 minutes as it moves at constant speed, what is its average speed? Choose the closest answer.
20 m/s
22 m/s
24 m/s
26 m/s
As a pendulum swings from its highest to lowest position, what happens to its kinetic and potential energy?
The PE and KE increase and decrease together
The PE decreases while the KE increases
Impossible to know without knowing the mass
The PE and the KE decrease and increase together.
When velocity triples, kinetic energy increases by ______ times. KE =1/2mv2
9
3
1.5
4.5
According to the Law of Conservation of energy, the amount of energy before and after a reaction must be the same. Which statement below is true?
The total amount of energy is conserved
The total amount of energy is less after a reaction
The total amount of energy is more after a reaction
Need the mass of the object to determine if energy is conserved.
A cliff diver with a mass of 125 kg jumps off a 50m high cliff, how fast will he be traveling just before he hits the water? (His height at this point is 0m)
(HINT: Find PE first. then KE = 1/2mv2
g = 9.8 m/s2
61,250 m/s
980 m/s
31.3 m/s
247.5 m/s
On the pendulum shown, where is the force of gravity the greatest?
A
D
G
The force of gravity is the same at all positions
On the pendulum shown, where is the total mechanical energy the greatest?
A and D (highest positions)
B
C (lowest position)
The total mechanical energy is the same at all positions
a trapeze artist swings back and forth in a simple pendulum of length of 16 m. Determine the period for one complete back and forth cycle.
4 seconds
8 seconds
12 seconds
16 seconds
not given
A student wishes to make a simple pendulum with a period of 1.00 second. What length must the pendulum have?
0.25m
0.50m
0.75m
1.0m
A car accelerating constantly at 5 m s-2. If its velocity changes from 10 m s-1 to 25 m s-1, calculate the time taken to reach final velocity.
1 s
4 s
2 s
3 s
A truck moving with an initial speed of 20 m s-1 decelerates at a constant rate of 3 m s-2. Calculate the distance travelled by the bus before it stops. The word stops refer to..............
u = 0 ms-1
u = 3 ms-1
v = 0 ms-1
a = 20 ms-1
An object start from rest and then the velocity become 10 ms-1. The word rest, refer to......
u = 10 ms-1
u = 0 ms-1
a = 10 ms-1
s = 10 m
What is occurring from point A to point B?
Which of the following is Vernier Calliper?
