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JFSC Year 7 Science 2018 Revision Flashcards | StudBud
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JFSC Year 7 Science 2018 Revision
JFSC Year 7 Science 2018 Revision
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1
Science is
a way of learning about the world through reasoning
a method of investigating problems and answering questions
fun
used to explain what happens in the universe
2
The correct sequence to separate a mixture of salt, sand and iron filings would be:
add water, evaporation, filtration, magnetic separation.
add water, filtration, evaporation, magnetic separation.
add water, magnetic separation, filtration, evaporation.
magnetic separation, add water, filtration, evaporation.
3
You are running a race. Which forces are you using?
Driving Force and Friction
Thrust and air resistance
Talent Force and Fitness
Energy Force and Drag
4
Which of the following data are CONTINUOUS?
The height of gum trees in the school grounds.
The brands of drinks sold in school the canteen.
The types of insects found on the school grounds.
The colours of cars in the staff car park.
5
Identify the FIRST main step involved in the formation of fossil fuels like coal.
Plant matter rots underwater and forms peat.
Plant matter builds up underwater.
Trees and other plants fall into swamps.
With pressure and heat, peat becomes coal.
6
If you drop a tennis ball and a basketball at the same time, which will hit the ground first?
Bowling ball
They hit at the same time
Tennis ball
Basket ball
7
A force is anything that causes a change in the _________ or _________ of an object (pick two).
colour
shape
motion
sound
8
In a food chain, organisms that feed on a producer are called:
omnivores.
primary consumers.
predatores.
secondary consumers.
9
The Narrows Bridge is strong enough to hold cars. What force do the cars put on the bridge?
Magnetic force
Tension force
Gravitational force
Reaction force
10
Uranium can release very large amounts of energy with almost zero greenhouse gas emissions
True
False
11
Why does the Sun appear to have a different path across the sky in the winter and summer?
The Earth rotates.
The distance from the Earth to the Sun changes.
The Sun rotates.
The Earth’s axis is tilted.
12
Identify this piece of equipment.
retort clamp
test tube holder
bosshead
clamp
13
What class of vertebrates would this animal be classified into?
Mammalia
Reptilia
Aves
Pisces
14
Kira hears her Bunsen burner hissing loudly. The safest thing she should do immediately is:
turn off the gas at the gas tap.
open the Bunsen burner air hole.
run out the door.
run to her teacher.
15
Ali is studying how volcanoes form. Which branch of science is he working in?
Chemistry
Geology
Physics
Biology
16
The scientist who worked out a classification system with seven major groups was:
Carl Linnaeus.
Charles Darwin.
Antonie van Leeuwenhoek.
Aristotle.
17
There are __________ equinoxes every year.
one
four
two
three
18
What is a force?
A Stop, Start, or Move
A Drop, Fall, or Slide
A Push, Pull, or Twist
A Punch, Kick or Shove
19
The spring stops extending when the weight force is ________ by the tension force of the spring
eliminated
increased
reduced
balanced
20
Night and day on Earth are caused by:
the tilt of the Earth on its axis as it orbits the Sun.
the Moon completing a single orbit around the Earth.
the Earth spinning around, once, on its axis.
the Earth completing a single orbit around the Sun.
21
What kingdom does the mould on this bread belong to?
Monera
Protista
Fungi
Plantae
22
A lunar eclipse occurs when the Moon is between the Sun and the Earth
False
True
23
When two magnets push away from each other, we say they...?
Reject
Retract
Repel
Attract
24
Identify which of these steps is performed FIRST when lighting a Bunsen burner
Light a match.
Open the air hole.
Turn on the gas.
Close the air hole.
25
An organism that recycles nutrients by breaking down dead organic matter is called a:
decomposer
producer
tertiary consumer
consumer
26
The force between the brakes and wheels of a car is called what?
Tension
Inertia
Friction
Electricity
27
TRUE OR FALSE: Soil is a renewable resource.
True
False
28
Chromatography is used to:
separate chrome from metals.
mix colours to form photographs.
separate chemicals from a mixture.
bond colours to a surface.
29
Identify this object
triple-beam balance
spring balance
manual balance
stretch balance
30
Muddy water looks murky because:
the mud is dirty.
the mud particles are soluble.
the mud particles are spread out and suspended in the water.
the particles have dissolved and spread through the water
31
Heather is looking through her telescope to study stars. This is an example of:
astrology.
ecology.
astronomy.
psychology.
32
The scientist most commonly regarded as having first identified gravity is:
Albert Einstein
Isaac Newton
Galileo Galilei
Nicolas Copernicus
33
Which is the best description of an autotroph?
An autotroph is another word for heterotroph.
An autotroph is classified under kingdom Protista.
An autotroph gets its food from other organisms.
An autotroph makes its own food from sunlight.
34
The best way to obtain fresh water from salt water is by:
filtration
distillation
decantation
evaporation
35
Which of the following is a QUANTITATIVE observation?
The water was clear.
The temperature of the water was 39°C.
The water was colourless
The water was hot.
36
High and low tides are caused by:
The gravitational pull of Earth on the oceans of the Moon.
The gravitational pull of the Moon on the oceans of Earth.
The gravitational pull of the Sun on the Moon.
The gravitational pull of the Sun on the oceans of Earth.
37
Which technique separates mixtures based on the size of the particles?
centrifugation
filtration
decantation
distillation
38
A colloid in which an undissolved liquid is spread throughout another liquid is called:
an emulsion.
a sedimentation.
a suspension.
a solution.
39
A centrifuge separates mixtures based on differences in their:
boiling point.
magnetism.
mass.
solubility.
40
Which one of the following groups of organisms contains only producers?
Cats, green frogs, mice
Cacti, grass, pond weed
Gum trees, worms, beetles
Mushrooms, bacteria, wheat
41
When sugar dissolves in water, the water is known as the
suspension
solvent.
solute.
solution.
42
The different phases of the Moon are caused by:
the distance of the Moon from the Sun.
the Moon being covered by the Sun’s shadow.
only part of the Moon’s surface being in sunlight.
different parts of the Moon’s surface facing the Earth.
