EXERCISE TEST

ACADEMIC YEAR 2009 / 2010

Subject                  :      Science-Physics

Class/Semester      :       VII/1st

Duration                :      120 minutes

A. Choose the correct answer!

1. Table below shows the relation between basic quantity and its SI Unit.

Basic quantity SI unit
1. Electric current Ampere
2. Mass Kilogram
3. Temperature Celcius
4. Length meter
5. Density kg/m3
Which of the relations are true?

A. 1, 2, and 3.                               C. 1, 2, 3, and 4
B. 1, 2, and 4                                 D. 1, 2, 3, 4, and 5

2. Which of the following quantity is not basic quantity?
A. Length                                       C. Volume
B. Mass                                          D. Time

3. The distance between two points is called . . . .
A. far                                             C. height
B. length                                         D. volume

4. The space occupied by an object is called . . . .
A. mass                                         C. volume
B. weight                                       D. temperature

5. The degree of hotness and coldness of an object is called . . . .
A. thermometer                             C. Fahrenheit
B. temperature                               D. heat

6. Select the correct conversion from the following alternatives:
A. 53 800 grams = 53.8 kilograms C. 2 900 meters = 29 kilometers
B. 3 600 seconds = 360 hours        D. 15 kilometers = 1 500 centimeters

7. The amount of materials in the substance is called . . . .
A. length                                        C .weight
B. amount of substance                   D. mass

8. A certain unit to measure the distance of objects on the sky is called . . . .
A. mil                                           C. light year
B. kilometres                                D. feet

9. Figure 1 shows the scale of measurement by a vernier calliper.

The result of that measurement is . . . .
A. 3.50 cm                                      C. 3.06 cm
B. 3.53 cm                                       D. 5.60 cm

10. Figure 2 shows the scale of measurement by a micrometer.

The result of that measurement is . . . .
A. 5.50 mm                                  C. 5.50 cm
B. 6.37 mm                                  D. 8.73 cm

11. Which of the following measurement tools are used to measure mass?
I. Lever balance
II. Beam balance
III. Spring balance

A. I and II only                              C. II and III only
B. I and III only                             D. I, II, and III

12. Figure 3 shows the scale of measurement with a triple beam balance.

The result of that measurement is . . . .
A. 329 g                                       C. 471 g
B. 401 g                                        D. 741 g

13. Figure 4 shows the level of water in a measuring cylinder, before and after a stone is put in.

The volume of that stone is . . . .
A. 40 cm3                                    C. 20 cm3
B. 30 cm3                                    D. 10 cm3


14. The volume of water in a glass is 100 ml. This volume equals . . . .
A. 10 m3                                      C.10 dm3
B. 100 cm3                                   D. 100 dm3

15. The mass of an object is 79 g, has a volume of 10 cm3. The density of that object is . . . .
A. 0.12 g/cm3                              C. 79 g/cm3
B. 7.9 g/cm3                                 D. 790 g/cm3

16. The density of an object is 0.8 g/cm3. What is the density in kg/m3?
A. 0.0008                                     C. 800
B. 0.008                                       D. 8000

17. The temperature of an object is 15ºC. That temperature in Fahrenheit is . . . .
A. 21.4º                                        C. 81.2º
B. 59º                                           D. 288º

18. The temperature of an object is 36ºR. That temperature in Celsius is . . . .
A. 24º                                          C. 40º
B. 36,65º                                      D. 45º

19. Celsius and Fahrenheit scales show the same value in . . . .
A. – 40º                                       C. 0º
B. – 20º                                       D. 40º

20. Figure 5 shows the comparison between Fahrenheit and Celsius thermometer.

The value of X is . . . .

A. 80º                                            C. 212º

B. 100º                                          D. 273º









21. Water becomes ice (solid) in the low temperature, state of water in the room temperature is liquid, and at
       the higher temperature, water changes into vapour (gas). This explains that the state of certain matter
      depends on it’s . . . .
       A. shape                                       C. temperature
       B. size                                           D. amount

22. Look at the table below:

      The state of mater Shape Volume
      solid           fixed                      (1)...………
      liquid          (2)…………         fixed
      gas             change                   change

The correct answer for 1 and 2 is . . . .
A. (1) change; (2) change                 C. (1) change; (2) fixed
B. (1) fixed; (2) change                     D. (1) fixed; (2) fixed

23. Look at figure 6 below!

Which the following statement is correct?
A. Figure 6.I, 6.II, 6.III shows the particles structure each of solid, liquid, and gas.
B. Figure 6.I, 6.II, 6.III shows the particles structure each of liquid, solid, and gas.
C. Figure 6.I, 6.II, 6.III shows the particles structure each of solid, gas, and liquid.
D. Figure 6.I, 6.II, 6.III shows the particles structure each of gas, solid, and liquid.

24. Read the following statement!
1. Solids will expand when they are heated.
2. Solids will contract when they are heated.
3. Solid will expand when they are cooled.
4. Solid will contract when they are cooled.
5. The volume of solids will bigger when they are heated.
6. The volume of solids will smaller when they are heated.

Which the statements above are correct?
A. 1, 4, and 5                                C. 2, 3, and 5
B. 1, 4, and 6                                 D. 2, 3, and 6

25. The following tools work based on expansion, except . . . .
A. bimetal                                       C. thermometer
B. thermostat                                  D. balloon

26. If a metal is heated, it causes the metal to expand to any directions. It occurs because. . . .
A. the atoms and molecules of the metal become bigger.
B. the atoms and molecules of the metal vibrate faster than usual.
C. amount of the atoms and molecules of the metal decrease.
D. the metal is a solid.

27. Look at the figure 7 below!

Based on an experiment by using Musschenbroek set above, shows that the linear expansion of an object is influenced by . . . .
A. the kinds of solid, the shape of an objects, the change of temperature.
B. the kinds of solid, the shape of an object, the length of an object.
C. the kinds of solid, the size of an object, the change of temperature.
D. the kinds of solid, the length of an object, the change of temperature.

28. Figure 8 shows a metal bar is made of steel with the length 0.25 meters on 27ºC, is heated.

If it is heated until 67ºC, how long is its expansion? (αSteel = 0.000011/ºC).
A. 10 m                                         C. 0.00011 m
B. 6.75 m                                      D. 0.000011 m


29. Figure 9 below shows electric wires being connected loosely between the poles.

What is the main purpose of connecting the wires loosely?
A. To allow the wires to be stronger
B. To allow the wires to contract without snapping during a cold day
C. To allow the wires to expand easily on a hot day
D. To allow the wires to last longer

30. Which the statements below are correct?
1. The heat energy flowing from an object with higher temperature to another object with lower temperature.
2. The heat energy flowing from an object with lower temperature to another object with higher temperature.
3. Heat is measured in unit of calorie.
4. Heat is measured in SI unit of joule.
5. Heat shows the degrees of hotness and coldness of an object.

A. 1, 3, and 4                                 C. 1, 4, and 5
B. 1, 3, and 5                                 D. 2, 4, and 5

31. Look at the table below!

Specific Heat Capacity of Some Substance
(J/kgºC)
Water 4184
Alcohol 2450
Aluminium 920
Iron 450
Copper 380

If each substance above has the same mass and increasing of temperature, which the following statements are correct?
1. The amount of heat energy needed by water more much than others.
2. The amount of heat energy needed by Copper more much than others.
3. In the same heating process, water is getting hot faster than others.
4. In the same heating process Copper is getting hot faster than others.

A. 1 and 3                                      C. 2 and 3
B. 1 and 4                                       D. 2 and 4

32. The amount of heat energy needed by 1 kilogram of substance to increase its temperature up to 1 Kelvin is called . . . .
A. 1 calorie                                    C. specific heat capacity
B. 1 joule                                        D. melting heat

33. Figure 10 below shows heating of water.

If water has a mass 200 g and is heated from 25ºC up to 45ºC, the amount of heat energy needed is . . . . (Cwater= 4200 J/kgºC).
A. 16,800,000 joule                     C. 168,000 joule
B. 1,680,000 joule                        D. 16,800 joule


34. A substance with the mass 2 kg needs heat energy of 90,000 J for increasing its temperature from 20ºC
     to 70ºC. The specific heat capacity of that substance is . . . .
A. 450 J/kgºC                               C. 45,000 J/kgºC
B.4,500 J/kgºC                             D. 9,000,000 J/kgºC

35. The change of matter from solid to liquid is called . . . .
A. freezing                                      C. evaporation
B. melting                                       D. sublimation

36. The change of matter from solid to gas is called . . . .
A. freezing                                     C. evaporation
B. melting                                      D. sublimation

37. Energy is needed to change the state of matter from solid to liquid is called . . . .
A. melting point                              C. boiling point
B. melting heat                                D. evaporation heat

38. Look at the graph below!

The graph above shows the relationships between the water temperature and heat energy during heating process of ice. Based on that graph, which the following statement is correct?
1. When ice is heated, the temperature and state of ice is change.
2 The ice temperature doesn’t change when it melts.
3. The ice begins to become fluid is shown by (I).
4. The matter is in gas state is shown by (III).

A. 1, and 3 only.                            C. 1, 2, and 3.
B. 2 and 4 only.                              D. 2, 3, and 4.

39. For melting 10 kg of alcohol in the frozen condition, if its melting heat is 6.9 x 104 J/kg heat needed is . . . .
A. 6.9 J                                         C. 6.9 x 104 J
B. 6.9 x 103 J                                D. 6.9 x 105 J

40. The heat needed by matter during the boiling process depends on . . . .
A. its mass C. its shape
B. its vapouring heat D. its mass and vapouring heat








B. Answer the following questions correctly!

21. Mention 7 basic quantities with their units in SI!

22. Look at figure below!




If the rectangular block measures 10 cm long, 2 cm wide, 3 cm high, and 12 g mass, find the density of that rectangular (in kg/m3)!

23. Mention and explain the 6 change of matter!

24. Explain, why the food put in the refrigerator can be dry!

25. Calculate the heat received by 0.2 kg of water that is heated from 12ºC to 90ºC (Cwater = 4200 J/kgºC)!

## GOOD LUCK ##