Pra Ujian Sekolah 1 SMP Trimulya Bandung
Soal:
1.
Look at the figure of instrument below !
There are some statements about this instrument
( 1 ). It is used to measure mass
( 2 ). Its SI unit is gram
( 3 ). It is used to measure weight
( 4 ). It containsbase quantity
( 5 ). Its unit is kilogram
From those statements above, which the following is correct ?
A. ( 1 ) , ( 2 ) and ( 4 )
B. ( 2 ), ( 3 ) and ( 5 )
C. ( 3 ), ( 4 ) and ( 5 )
D. ( 1 ), ( 4 ) and ( 5 )
2. There are some instruments of measurement in a wooden box such as :
ruler, measuring glass, measuring – tape, thermometer, spring balance, stopwatch, body – scale and measuring spoon.
Which instruments contain a derived quantity …
A. Ruler, thermometer and stopwatch
B. Measuring glass, measuring spoon and measuring tape
C. Measuring tape, ruler and spring balance
D. Measuring glass, spring balance and measuring spoon
3. Look at the picture of vernier caliper below ! What is the right reading scale ?
Which the following is the right reading scale..
A. 4,30 cm C. 4,35 cm
B. 4,33 cm D. 4,37 cm
4. Look at the picture about measurement by using triple balance and measuring glass as picture shown !
from that picture, density of irregular object in this experiment is.................... 𝑘𝑔/
A. 3.160 C. 1. 357
B. 2.375 D. 9. 500
5. Look at the table below !
Object | Mass of object ( gram ) | Length ( cm ) | Width ( cm ) | Height ( cm ) |
1. | 12 | 4 | 3 | 5 |
2. | 20 | 2 | 2 | 5 |
3. | 60 | 3 | 2 | 5 |
These objects are placed in the same liquid ( water ). If density of water is 1000 𝑘𝑔/ 𝑚3 . The right condition for those objects in water :
A. object 1 = sink, object 2 = floating, object 3 = submerge
B. object 1 = floating, object 2 = submerge, object 3 = sink
C. object 1 = submerge, object 2 = floating, object = sink
D. object 1 = sink, object 2 = submerge, object 3 = floating
6. Look at the picture is given about the experiment of a simple thermometer !
Which the following is not the right conclusion :
A. The purpose of covering bottle neck and the top of straw with clay material is to prevent liquid ( alcohol ) from the effect of air pressure from the outside because it can reduce or push downward the level of liquid in straw.
B. The level of liquid depend to the change of temperature from the outside. When temperature raises then the level of liquidwill raise also.
C. The change of level of liquid occurs because liquid receives air pressure from the outside and this air pressure press liquid at the bottom to move upward
D. When the level of liquid increases, it means thermal energy of liquid increases also.
7. Look at the picture is given !
The right scale will be shown at point Z is…
A. 480 C. 560
B. 500 D. 640
8. A simple thermometer experiment in physics laboratory gives a valid data about connection between scale of standard scientific thermometer ( alcohol – glass thermometer ) with a simple thermometer according to the table below !
Condition | Standard Thermometer | Simple Thermometer |
Hot water ( boiling ) | 800 C | 12 cm |
Cold water ( freezing ) | 00 C | 4 cm |
Which the following is the right prediction ( the level of liquid at a simple thermometer ) if temperature of water ( by using standardscientific thermometer ) showing 600 C?
A. 13 cm C. 8 cm
B. 10 cm D. 6 cm
9. Look at the picture is given below !
Which number showing process that a substance receives heat energy ?
A. 1, 3 and 5 C. 1, 2 and 3
B. 2, 4 and 6 D. 4, 5 and 6
10. The table of specific heat of common materilas is given !
If the bottom four types of solid materials have the same mass and volume and it will be heated under the same same rate of heat energy, which material has a shortest time to change its temperature with a time difference of 10 Celcius degree from its previous temperature ?
A. Granite
B. Iron
C. Copper
D. Lead
11. A student wants to rise the temperature of water from 25 0 C to 85 0 C. The volume of water in his experiment is known 200 mL ( ρ water = 1 g/cm3 ) and specific heat capacity of water is 4200 J/kg 0 C. The amount of heat is needed in this activityis…
A. 62. 000 J C. 50. 400 J
B. 54. 000 J D. 46. 600 J
12. Some students have physics experiment by using a spesific solid material as the table shown !
There is 200 gram of substance is used and heat energy is used to change temperature of substance from 5 0 C until 25 0 C is3360 J.
Based on data, which the type of substance is intended ?
A. diamond C. concrete
B. glass D. aluminium
. 13. Look at the pictures are given below ! This is an illustration of thermal expansion in solid by using Muschenbroek instrument.
The right conclusion about type of metal - material for P, Q and R is…
A. Steel, Brass and Aluminium C. Brass, Steel and Copper
B. Copper, Steel, Brass D. Aluminium, Brass and Copper
14. Look at the picture below ! Water and alcohol have the same volume and being heated under the same amount of hot water .
The final condition can be happened because…
A. Density of water is lower than alcohol
B. Water is more sensitive than alcohol
C. Coefficient of thermal energy from water is higher than alcohol
D. Coefficient of thermal energy from alcohol is higher than water
15. Look at the picture is shown !
The right energy conversions according to the picture is…
A. Electric energy à heat energy
B. Potential chemical energy à light energy à heat energy
C. Potential chemical energy à electric energy à light energy
D. Light energy à heat energy à potential chemical energy
16. Look at this statement : In motion of object, the workdone ( W ) is needed to move an object and change its velocity is equal tothe change of its kinetic energy ( ΔKE ).
mass of car : 1200 kg
By using that previous statement, the workdone is needed :
A. 64 kJ C. 48 kJ
B. 50 kJ D. 36 kJ
17. Look at the picture below !
The right statement about kinetic energy and potential energy ofthe ball at any position is
A. KE maximum at 3, PE maximum at 3
B. KE maximum at 4, PE maximum at 5
C. KE maximum at 1, PE maximum at 3
D. KE maximum at 5, PE maximum at 1
18. Look at the picture below ! Speed of object at B is 10 m/s. If mass of object is 1 kg then mechanicalenergy of object at B is…
A. 110 J
B. 100 J
C. 80 J
D. 70 J
19. The hottest planet in solar system is Venus and it is formed by these conditions, except…
A. It’s position is close enough to the Sun
B. its atmosphere is made of 96,5% of CO2 and 5,3% of N2
C. most of heat from the sun can escape back to space
D. it can create green house effect because the characteristic of atmosphere
20. Look at the picture below !
This phenomenon is happened in Iceland and it can be occurred because…
A. Meteor is burned in atmosphere
B. Reflection of sun light over the horizon
C. Friction between electromagnetic wave on earth with solar wind of the sun
D. Reflection of visible light by the surface of ice
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