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Worksheets1K Online Quiz 2
Total questions: 150
Worksheet time: 1hrs 4mins
Which of the following is a natural phenomenon?
Dam construction
Volcanic eruptions
Use of mobile phones
Discovery of new medicines
Which of the following represents the prefix value of kilo?
10
100
1000
1000 000
Which statement is true about mass?
the total volume of an object
the total surface area of an object
the gravitational force acting on an object
the amount of matter contained in an object
diagram above shows a hazard symbol. what is the meaning of this symbol?
flammable
irritant
explosive
poisonous
Table above shows the volumes of a few marbles measured using the water displacement method. What is the volume of 5 marbles?
3 cm3
9 cm3
15cm3
21cm3
The following information shows the steps involved in a scientific investigation
J : making an observation
K : Making a conclusion
L : analysing data
M : collecting data
Which of the following is the correct step in the scientific investigation?
J, M, K, L
J, M, L, K
M, J, K, L
M, J, L, K
Diagram above shows three types of bottles with different labels. What are the chemicals that might contain inside bottle P, Q and R?
P: chloroform, Q: ethanol, R: mercury
P: Radium, Q: mercury, R: Pottasium
P: Benzene, Q: potassium, R: radium
P: lead, Q: petrol, R: chloroform
which of the following converting unit of base quantity is correct?
1.9 kg -> 19 000 g
89 g -> 0.089 kg
170 mm -> 0.017 m
450 cm -> 45 m
which of the following apparatus can be used to measure the volume of liquids?
measuring cylinder , test tube
beaker, stopwatch
test tube, pipette
measuring cylinder, beaker
choose the correct match
length -> kilometre -> km
mass -> gram -> g
temperature -> degree celcius -> oC
electric current -> ampere -> A
Which of the following structure is not found in animal cells?
Mitochondrion
Cell membrane
Chloroplast
Cytoplasm
Which of the following structure controls movement of substances in and out of a cell?
Cell wall
Cell membrane
Chloroplast
Mitochondion
Which of the statement about red blood cell is wrong?
Without nucleus
Has biconcave disc shape
Destroys bacteria
Contains haemoglobins
Which of the following structure is site of cellular respiration?
Chloroplast
Nucleus
Mitochondrion
Cell wall
Which of the following organ is not found in digestive system?
Oesophagus
Liver
Large intestine
Lung
Our bodies remove waste products through .....
Excretory system
Lymphatic system
Digestive system
Nervous system
Two or more types of tissues can form an (a)
Which of the following is an unicellular organism?
Mucor
Spirogyra
Hydra
Amoeba
Which of the following statement about photosynthesis is wrong?
Releases energy
Needs chlorophyll
Needs water
Produces glucose
Excess glucose from photosynthesis is stored in the form of (a)
Which of the following is not correct about iodine test?
It is used to test glucose
Chlorophyll must be removed prior to the test
It is used to test starch.
Positive result is shown when brown colour of iodine solution turn blue-black
Which of the following is not correct about iodine test?
It is used to test glucose
Chlorophyll must be removed prior to the test
It is used to test starch.
Positive result is shown when brown colour of iodine solution turn blue-black
Which of the following is not products from cellular respiration?
Carbon dioxide
Glucose
Water
Energy
What is meant by the mass of an object?
Quantity of substance in an object.
Pull of gravity on an object.
Pressure exerted by an object
Total force exerted by an object.
Which is the best definition for matter?
Anything which has shape.
Anything which has volume
Anything which has volume and mass
Anything which has mass and occupies space
A ballon expands and its weight increases as it is filled with water. This shows that...
water has mass
water takes up spaces
water is matter
Solids possess fixed shapes and volumes because their particles...
do not have energy
attract one another
keep the same positions
are of the same size
The perfumes used by a girl can be detected when she passes by. How can this be explained?
Particles of perfume diffuse quickly through the air
Particles of perfume combine with air particles
Particles of perfume float in the air
Perfume sets free smell into the air
Which statement below is incorrect?
Particles of solids vibrate in their own positions.
Particles in liquids can move about freely
Particles in gases diffuse in all directions
The movement of particles in matter decreases with rise in temperature
What is meant by the density of a substance?
The number of particles in 1 cm3 of a substance
The volume of 1 g of a substance
The space taken up by 1 g of a substance
The mass per unit volume of a substance
An object weighing 40 g displaces 5 cm3 of water in a measuring cylinder. What is the density of the object?
0.125 g/cm3
35 g/cm3
8 g/cm3
4.5 g/cm3
A piece of aluminium weighing 260 g is placed into a larger measuring cylinder containing water. if the density of aluminium is 2.6 g/cm3 , what volume of water will it displaces?
10 cm3
50 cm3
26 cm3
100 cm3
Which one of the following does not depend on how small or large a sample of the material is used in determining it?
Density
Mass
Weight
Volume
A wooden rod with a cross-sectional area of 5cm2 and a lenght of 20 cm has a of 70 g. What is the density of the rod in g/cm3?
0.6
0.7
0.8
0.9
What property of air is made use of in using it to inflate motor car tyres?
Air is a mixture of gases
Air exerts pressure in all directions
Air has mass
Air occupies space
How does a submarine make itself less dense for rising to the surface of the sea?
By stopping its engines
By inflating the floats in the submarine
By filling its ballast tanks with sea water
By emptying sea water from its ballast tanks
Among the things which float on water are....
rafts for carrying goods
buoys fr guiding ships
floats on board ferries
When your mother is cooking curry in the kitchen, people in the sitting room can smell the curry. This is an application of...
diffusion of gases
density of air
convection currents
the principle of flotation
Penguins lay 1-2 fertilized eggs that the male and female take turns incubating on their feet. What type of reproduction does this example represent?
Sexual reproduction
Asexual reproduction
Reproducing asexually will produce offspring ...
genetically different from each other
genetically identical to the parent
When an offspring grows off from the body of a parent organism it is called __________________.
budding
fission
fragmentation
sporulation
____________________ occurs when a male gamete (sperm) combines with a female gamete (egg).
sporulation
fertilization
fission
regeneration
New PLANTS are reproduced from roots, stems, or leaves of the parent plant (Ex: Strawberries, Potatoes)
Sexual Reproduction
Vegetative Reproduction
Budding
Regeneration
When an organism splits into an exact copy
fertilization
binary fission
regeneration
budding
When fertilization happens outside the bodies of the parents
external fertilization
asexual reproduction
internal fertilization
sexual reproduction
Which of these statements about asexual reproduction is false?
Asexual reproduction requires only one parent.
Asexual reproduction increases variations in a population.
Asexual reproduction is carried out by bacteria.
Asexual reproduction can produce more offspring faster than sexual reproduction can.
Which is a type of Asexual Reproduction
Sexual
Binary fission
Cells
organism
What is an disadvantage of asexual reproduction?
An organism can reproduce without a mate
Some organisms can quickly produce a large number of offspring
There is little genetic variation within a population
A watermelon has more matter than a grape, so it has more
mass
weight
solid
greater
Volume is ______________.
length X width
height X length
length X width X height
width X height
Which example is a compound?
N2
O2
Cu
H2O2
Two or more atoms joined together for a(n)...
Element
Compound
Molecule
Mixture
A compound is a substance formed when two or more chemical elements are chemically bonded together. Example : Pure water.
True
False
A mixture is a combination of two or more pure substances in which each pure substance retains its individual chemical properties.
True
False
Things that take up space are called?
Mass
Liquids
Matter
Space
Water can be a solid, liquid, and a gas.
True
False
Solid state defines as a constituent particles remain fixed at their positions and can only oscillate about their mean positions.
True
False
Liquids able to expand to fill any container with random motion and very low densities and also with a very low attraction between the particles.
True
False
Gas is a state of matter with definite volume but not definite shape.
True
False
Melting is a process that involves the absorption of energy from the surroundings.
True
False
Which of the following involves the process of releasing energy to the surrounding? Tick your answer(s).
Melting of ice
Water turns into ice cubes
Steam turns into water droplets
Nafthalene evaporates to the air
Formation of snow
Matter has
weight
kilogram
mass
gram
Matter occupies
field
solid
space
liquid
Which one is matter?
human
light
sound
heat
Which one is non-matter?
book
worm
plants
vacuum
Which one is physical properties?
rusting
respiration
combustion
melting
Which one is chemical properties?
density
boiling
decomposition
freezing
Formula of density?
mass per area
mass per kilogram
mass per volume
volume per mass
Higher density equal to
less dense
denser
more dense
less denser
Solvent of ink?
water
sugar
turpentine
salt
What are 3 types of particles which make up matter?
Compound
Molecules
Ions
Atoms
What is the simplest particle of matter?
Atoms
Molecules
Ions
Compound
Which is a pure substance that cannot be broken down into any simpler substance by any physical or chemical method?
Compound
Molecule
Element
Atom
What is a substance that is made up of two or more different elements chemically joined together in a fixed ratio?
Compound
Mixture
Atom
Solvent
Which is/are NOT an example of compound?
Water
Oxygen gas
Carbon dioxide
Hydrogen gas
Which is an example of element?
Aluminum
Water
Salt
Sugar
Atom consists of three subatomic particles, except:
electron
proton
molecule
neutron
Electron is a particle with ________ charge.
negative
positive
no
Proton is a particle with _________ charge.
negative
positive
no
Neutron is a particle with _________ charge.
negative
positive
no
'Neutral particles made up of two or more atoms' is the definition of:
element
atom
molecules
mixture
Which of the following is the example an element?
shell
salt
cocktail
oxygen tank
A compound consists of two or more elements combined physically.
True
False
Salt (NaCl) is an example of a compound. What are the elements found in salt?
Carbon, calcium and oxygen
Carbon, hydrogen and oxygen
Sodium and chlorine
Oxygen and carbon
Periodic Table is an orderly arranged table of __________?
compounds
mixture
atoms
elements
Select three correct characteristics of a METAL.
can conduct heat & electricity
low melting and boiling point
high tensile strength
shiny appearance
low density
All of the following are the example of metals, except:
aluminium
copper
carbon
zinc
All of the following are the example of non-metals, except:
iodine
chlorine
carbon
iron
All of the following can conduct electricity, except:
carbon
sulphur
copper
iron
MIxtures can be separated physically.
True
False
Impurities can be removed from flour using magnet.
True
False
WHAT IS A MATTER?
Substance that has shape and weight
Substance that has mass and occupies space
Substance that has color and shape
Substance that has mass and did not occupies space
This prove that
Key can sink
Key has mass and occupies space
Key has mass and did not occupies space
Key did not has mass but occupies space
What is the substance that exists in all three states naturally?
Air
Water
Fire
Sound
What is the substance that NOT exists in all three states naturally?
Pen
Rainbow
Water
Oxygen
Particles vibrate in fixed position.
Solid
Liquid
Gas
Particles move randomly and collide with one another.
Solid
Liquid
Gas
Take the shape of the container but fixed volume.
Solid
Liquid
Gas
Lower density equal to
denser
dense
less denser
less dense
What is diffusion?
Process in which the particles of substances diffuse from high concentration area to a low concentration area
Process in which the particles of substances diffuse from low concentration area to a high concentration area
Rate of diffusion of particles in a solid is
high
low
Rate of diffusion of particles in gas is
highest
lowest
During condensation,
heat is absorbed
heat is released
heat is trapped
heat is gone
The clothes hung on the clothesline is undergoing ______.
Boiling
Melting
Evaporation
Condensation
there is ____ type of atom in an element.
two
one
four
three
zero
electrolysis: components in a compoud can be separated ______.
physically
chemically
the function of distillation
to separate two solid mixtures in which one of the substances is magnetic and the other is not
to separate a liquid and insoluble solid mixture
to separate soluble and insoluble materials in water
to separate a completely miscible liquid-liquid mixture that have different boiling points
physical change form new substances. True or False?
True
False
The..................... of an organism always changes due to the changes that occur inside and outside of the body.
internal environment
external environment
increase
homeostasis
The definition of Homeostasis?
is a process of regulating the sugar level in our body to be normal and stable condition.
is a process of regulating the internal environment of the body to be in a balanced and stable condition.
is a process of regulating the external environment of the body to be in a balanced and unstable condition.
is a process of regulating the internal environment of the body to be in a unbalanced and stable condition.
Excessive lost of water makes us feel ............and this can be...........in the long term.
strong and safe
weak and protected
thirsty and secured
thirsty and fatal
Our body temperature needs to be always maintained at ......oC.
50 oC
27 oC
37 oC
42 oC
An extra ....... oC rise in the body temperature can affect the functions of the body cells and can cause ............
6 oC and death
1 oC and death
10 oC and hell
7 oC and heaven
(INCREASE) detected by (.................) and sends the information to the (.....................) and then (DECREASES)
Corrective mechanism and Control centre
Brain and nerve system
Control centre and corrective mechanism
Stimuli and receptors
Regulation of water content and ................. are important homeostasis to .............. life.
glucose level and sustain
blood pressure and end
blood level and carry on
body temperature and sustain
