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Grade 9 Science Course Outline By: Sahra Ahmed & Ali Khalifa. Flashcards | StudBud
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Grade 9 Science Course Outline By: Sahra Ahmed & Ali Khalifa.
Grade 9 Science Course Outline By: Sahra Ahmed & Ali Khalifa.
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Answers
1
Electricity: Factors increasing resistance
the temperature of the wire
the length of the wire
the thickness of the wire
All of the above
2
Matter: When 2 materials mix constantly and don't settle, the mixture is called a
Solution
Compound
Solute
Sugar
3
Electricity: if an object becomes polarised it means that one side turns negatively charged and the other turns positive
False
True
4
Matter: Which example below is a mixture?
Milk Shake
Soup
Pizza
Starburst
5
Chemistry: Which of the following is not an indicator of a Chemical Reaction?
all of the above
It becomes poisonous
Gas/bubbles form
change of colour
6
Space: What is the difference between the inner planets and the outer planets?
The outer planets are smaller than the inner planets
the inner planets are heavier than the outer planets
The inner planets are smaller than the outer planets
The outer planets have more rocks than the inner planets
7
Chemistry: Which of the following materials is a conductor?
Glass
Foil
Aluminum
Rubber
8
Matter: Which of the following statements are true
Atoms can join to form molecules
Atoms contain more than one element
9
Electricity: The following image shows resistors in
parallel
series
10
Chemistry: Is O the element symbol for oxygen?
True
False
11
Chemistry: Which of the following is a chemical property of gold.
Soft
cannot be rusted properly
Reflects Light
All of the above
12
Matter: Water vapour is a...
Liquid
Gas
Solid
13
Chemistry: When you vomit it tastes sour because
your stomach contains an alkali
your stomach contains an acid
14
Chemistry: Name the elements in NaHCO3
sulphur, hydrogen, cobalt
sodium, hydrogen, cobalt
sulphur, hydrogen, carbon trioxide
sodium, hydrogen, carbon, oxygen
15
Chemistry: Acids have a high pH
True
False
16
Matter: An increase in temperature usually slows down a chemical reaction.
False
True
17
Matter: A physical change transpires when matter changes state, as from a liquid to a gas.
True
False
18
Matter: A gas...
Can fill a container
All of the above
Does not have a definite shape
Does not have a definite volume
19
Electricity: The greater the resistance
the lower the current
the higher the current
current stays the same
All of the above
20
Space: A nebula is:
A cloud of ice
A cloud of dust and gas
A cloud of just gas
A cloud of just dust
21
Electricity: in a circuit, current flows from
negative to positive
positive to negative
Negative
Positive
22
Electricity: The symbol representing current:
R
A
I
B
23
Electricity: If one bulb is disconnected in this circuit, will the other bulb still shine?
No
Yes
24
Electricity: special electrical components that control the flow of electric current
variable resistor
resistor
diode
ammeter
25
Space: One factor that makes life possible on Earth is
an atmosphere
gravity
water
greenhouse effect
26
Chemistry: An atom is made up?
little particles
protons, neutrons and electrons
protons, nucleus and electrodes
positive, neutral and negative
27
Chemistry: What type of mixture is this?
heterogeneous
homogeneous
28
Electricity: Materials that resist the flow of electrons/ electric current
Insulator
conductor
29
Space: The universe is expanding. This means that?
Galaxies are getting bigger.
The amount of space between galaxies is increasing.
Atoms are getting bigger.
The universe is creating more matter.
30
Matter: Heat can separate salt from water by ?
Evaporating the water
Sinking the salt
31
Chemistry: Is cutting a piece of paper an example of a Physical or Chemical change?
Physical Change
Chemical Change
32
Matter: All living and non-living things are made up of matter
False
True
33
Matter: If sand fills a container does it mean sand is a liquid?
True
False
34
Electricity: Resistance is measured in what unit?
the lower the current
the higher the current
all of the above
current stays the same
