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Science Review
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Answers
1
The state of matter that has no definite size or shape is
plasma
solid
gas
liquid
2
My body is warm, I have fur, feed my young on milk, and have live births. What am I?
crustaceans
amphibian
reptile
mammal
3
Which organism is both a
primary
and a
secondary
consumer?
mussel and zooplankton
mussel
small invertebrates
zooplankton
4
It contains genetic information
vacuole
animal cell
cytoplasm
nucleus
5
Amphibians spend the first part of their lives in the fresh water breathing through gills
not at all
true
sometimes
false
6
What is the number of the highest
trophic level
in this food web?
5
6
3
4
7
Hydrochloric acid + Sodium hyroxide → ____________ + Water
Sodium sulphate
Sodium chloride
hydroxide
Sodium nitrate
8
Which one of the following shows discontinuous variation?
eye colour
height
strength
weight
9
Reaction between acid and alkali producing salt and water
precipitation
Combustion
neutralization
Decomposition
10
first tropic level in this diagram
seaweeds and phytaplankton
phytoplankton and seaweeds
seaweeds
phytoplankton
11
My body is warm and covered in feathers. I lay eggs which hatch into chickens. What am I?
bird
mammal
reptile
amphibian
12
A gas
has fast-moving particles
has a definite shape but no definite volume
both a and b
has a definite volume but no definite shape
13
Which of the following indicator will show different colour in acid, neutral and alkali?
Phenolphtalein
Universal indicator
Litmus paper
both yellow and blue
14
All water molecules in the liquid are moving. Some of the molecules have move....................
gas
solid
energy
particles
15
At higher temperatures
particles in an object have less energy
all of the above
a gas contracts
particles in an object move faster
16
Nitric acid + __________ → Sodium nitrate + Water
Sodium hydroxide
carbonate
Magnesium hydroxide
Aluminium oxide
17
It is removal from organism of toxic materials and substances in excess of requirements.
respiration (releasing energy)
movement
digestion
excretion
18
Which one of the following is an environmental variation?
attached earlobe
male or female
short hair
eye colour
19
the chemical reaction in cells that breakdown nutrients molecules and release enrgy
cytoplasm
respiration
nucleus
palisade mesophyll cell
20
taking in materials for energy, growth and development.
growth
nutrients/feeding
reproduction
digestion
21
in this diagram, the liquid particles become.............
gas
condense
combined liquid and gas
atoms
22
what's the biggest difference between birds and mammals.
birds are vertebrates
mothers take care of their babies
birds have thin bones and skulls
birds are warm blooded
23
what are mammals?
hot and cold blooded
cold blooded
warm blooded
yellow only
24
mammals are animals that
have live young
living in the jungle
don't have backbone
lay eggs
25
Its is an action by an organisms causing a change of position or place.
releasing energy
movement
photosynthesis
reproduction
26
What is happening when my ice cream changes from a solid to a liquid?
melting
burning
freezing
evaporation
27
It is closely packed but without a pattern
solid
liquid
plasma
gas
28
There are five categories of vertebrates. Which one is not a vertebrate?
arhtropods
reptiles
mammals
birds
29
Acid in soft drink
hydrochloric acid
sulfuric acid
acetic acid
carbonic acid
30
which organisms are producer?
seaweeds and limpets
seaweeds and grass
seaweeds and phytoplankton
both read and blue
31
Which one of the following shows continuous variation?
tongue rolling
blood group
male or female
height
32
Define a liquid.
Indefinite shape, indefinite volume
Definite volume, indefinite shape
Found in stars
Definite shape, definite volume
33
The particles are moving and gliding each other
liquid
solid
plasma
gas
34
What is the meaning of the above hazard warning symbol?
corrosive
flammable
toxic
explosive
35
Which of the following is NOT a characteristic of arthropods?
segmented body
endoskeleton
exoskeleton
jointed appendages
36
these molecules move ............... enough to escape the surface of the liquid.
fast
slowly
slower
impact
37
Sodium hydroxide is used
to make fertilisers.
to cure gastritis.
to make battery.
to make detergent.
38
My body is moist and smooth, I lay eggs, and live in or near the water. What am I?
fish
reptile
insects
amphibian
39
What do the
arrows
in a food web show?
all of the above
it shows who eats who
shows the transfer of energy from organisms to others
it shows animals in a food web are able to move to feed another animals
40
What kind of acid is present in your stomach?
Citric acid
Hydrochloric acid
Sulfuric acid
Nitric acid
41
When you get a bee sting, what will you use to make you feel better ?
both red and blue
water/milk
baking soda/toothpaste
lime water
42
Which of the following will change the red litmus paper to blue?
Hydrochloric acid
Sodium hydroxide
Nitric acid
Sulphuric acid
43
Freezing
gas to solid
solid to gas
liquid to gas
liquid to solid
44
all of the following are the characteristics of mammals except
they give birth to live young
they produce milk
they are covered with hair
they breath through gills
45
amphibians are __________ which means they have backbone
invertebrates
vertebrates
skeletons
amphibians
46
Which of the following is a vertebrate?
amphibian
echinoderm
annelid
arthropod
47
Boiling
gas to solid
solid to gas
liquid to solid
liquid to gas
48
It is the process that make more of the same kind of organisms.
movement to find partner.
reproduction
generation to generation
cloning
49
which words describe the skin of a frog?
soft and scaly
hard and leathery
soft and moist
dry and bumpy
50
Particles of a liquid
are free to move around one another but still touch.
are tightly packed together and stay in a fixed position.
decrease in volume with increasing temperature.
have no viscosity.
