Quantities Quiz

1. Which one of these followings is the unit of time …
a. degree
b. meter
c. second
d. kilogram

2. The degree of hotness and coldness of an object is called….
a. mass
b. temperature
c. length
d. time

3. The duration between two events is called….
a. mass
b. temperature
c. length
d. time

5. The example of compound (senyawa) is Oxygen. The formula of Oxygen is ……
a. O2
b. CO
c. CO2
c. H2O

Quantities

Quantities

Quantities are divided into two, those are basic quantities and derived quantities.

There are 7 basic quantities, namely: length, mass, time, temperature, electric current, amount of substance, and luminous intensity.

Meanwhile which are included into the derived quantities are area, volume, velocity, force, density, power, work, and other.

Length. In daily life, length is used for measuring distance, thickness of a book, etc. In science length represents the distance between two points. The SI of length is meter (m).

Mass. The amount of materials in the substance is called mass. The mass is determined by the contained materials and fixed state although the object’s position changes. In SI, mass uses fundamental unit of kilogram (kg) and is measured with lever balance.

Time. Time is the duration between two events. For example, daylight is between the sunrise and sun set. The SI unit for time is second (s).

Temperature. Fire is hot but ice is cold. A hot object is said to have high temperature, but a cold object has low temperature. Thus temperature shows the degree of hotness and coldness of an object. The common measuring tool for temperature is a thermometer.

Basic Quantities

Basic Quantities

Quantities are divided into two, those are basic quantities and derived quantities. There are seven basic quantities, those are length, mass, time, electric current, temperature, luminous intensity, and the amount of substance.

Triple balance is device measurement for mass.

Meanwhile which are included into the derived quantities are area, volume, velocity, force, density, power, work, and other.

ENRICHMENT TEST OF PHYSICS 2

ENRICHMENT TEST OF PHYSICS 2

1. Which is the correct statement concerning liquid?
I. Liquid has a definite shape
II. The particles of liquid only vibrate in their fixed positions
III. The particles of liquid are packed tightly together without space in between
a. I only
b. I and II only
c. II and III only
d. I, II, and III


2. The density of an object depends on its
I mass
II volume
III surface area
a. I only
b. I and II only
c. II and III only
d. I, II, and III


3. The density of oil is 0.80 g/ cm. This means that the
a. mass of 1 cm3 of cork is 0.80 g
b. mass of 0.80 cm3 of cork is 1 g
c. density of 1 cm3 cork is 0.80 g
d. density of 0.80 cm3 cork is 0.80 g

4. The mass of an object is 100 g and its density is 4 g/cm. What is its volume?
a. 4 cm3
b. 25 cm3
c. 100 cm3
d. 400 cm3

5. Mass of stone is 20 gram.If the volume of stone is 10 cm3, the density of stone is….
a. 0.2 gr/cm3
b. 2.0 gr/cm3
c. 20 gr/cm3
d. 200 gr/cm3

8. Ice cube floats on the surface of water because it
is denser than water
does not dissolve in water
does not react with water
d. is less dense than water

ENRICHMENT TEST OF PHYSICS1

1. The density of a metal is 5800 kg/m3. If the mass of the metal is 2900 kg, then the volume of the metal is…
a. 0,2 m3
b. 0,5 m3
c. 1 m3
d. 2 m3

2. The characteristics of matter are…
(1) Particles are not idle, they always vibrate
(2) There are attractive forces between particles
(3) Particles are visible
The correct statement are……
a. (1), (2), and (3)
b. (1) and (2)
c. (1) and (3)
d. (2) and (3)

3. 100 ml liquid has mass 100 gr. The density of liquid is …….
a. 0,5 g/cm3 c. 1,5 g/cm3
b. 1 g/cm3 d. 5,4 g/cm3

4. The water surface in a glass tube has concave in shape. The happens because ……
a. the adhesion of water and the glass tube < water cohesion
b. the adhesion of water and the glass tube > water cohesion
c. the cohesion of water and glass tube < water adhesion
d. the cohesion of water and glass tube > water adhesion

5. A bar of iron has length 1 meters at temperature of 30 0C. If its expansion coefficient 0.000012 / 0C, the length of the iron at temperature of 50 0C is ….
a. 0.100024 m c. 24.00025 m
b. 1.000240 m d. 1.24000 m

6. Evaporation of solid without passing trough liquid called ……
a. Sublimation
b. Condensation
c. Melting
d. Evaporation

7. The transfer of heat through a heat conductor with a flow of the medium’s material is called……..
a. conduction c. convection
b. radiation d. heat flow

8. An ice which has a mass 2 kg is heated from -20oC to 0oC . If the specific heat of ice is 2100 J/kg oC, then the energy required to change its temperature ……..
a. 210 J
b. 8400 J
c. -84000 J
d. 84000 J

9. Mercury has vapor heat of 272.000 J/Kg. If the mass of mercury is 200 gr, the heat required to vapor is……..
a. 54.400.000 joule
b. 544.000 joule
c. 54.400 joule
d. 544 joule

Measurement

Definition of measurement
1. Measuring is to compare a physical quantity of an object with similar quan­tity used as a unit.
2. A standard measurement is an agreed unit of measurement with fixed value.
3. The measuring system used in the world is the International System (SI). The SI units can be enlarged or lessened by adding prefixes: kilo (k) meaning 1000 times, hecto (h) meaning 100 times, deca (da) meaning 10 times, deci (d) meaning 1/10 times, centi (c) meaning 1/100 times, milli (m) meaning 1/1000 times and micro (μ) meaning1/1000000 times.

Quantities and Units

Quantities and Units
1. Quantity has two components: Value and units. Quantity can be divided into: fundamental quantities and derived quantities.
2. Fundamental quantities are convention­ally established by the International Con­ference on Weight and Measurement. For example, length in metre, mass in kilogram, and time in second.
3. The derived quantities are made of the fundamental quantities. For example, volume unit is cubic metre (m3), arranged from fundamental quantity length.