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Grade 9 Science Exam Review
Grade 9 Science Exam Review
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1
One atom of mercury possesses 80 protons, 80 electrons, and 121 neutrons. What is the mass #?
41
281
201
160
2
Which of the following is a list of characteristic physical properties?
Combustibility, lustre, viscosity
Colour, boiling point, reactivity
Density, melting point, boiling point
Malleability, conductivity, flammability
3
Static Electricity can be found in every day life through which of the following?
Lightning Rods
Photography
Electrostatic Precipitators
Plugging your phone into an outlet
4
How many different atoms are there in SiCl
4?
3
4
5
2
5
A sulphur ion has 16 protons and a charge of -2. How many electrons does a sulphur ion have
14
34
18
8
6
Rutherford's gold foil experiment demonstrated that:
A few alpha particles repel backwards and not through foil
All of the above
Most alpha particles will go straight through the gold foil
Some alpha particles deflect off course as go through foil
7
Carbon is cycled from dead organisms back into the atmosphere mostly through:
Photosynthesis
Transpiration
Decomposition
Cellular Respiration
8
Which of the following is NOT an example of a conductor
Wood
Iron
Metal
Gold
9
Which of the following is NOT an insulator:
Glass
Gold
Rubber
Wood
10
What does this symbol represent?
A fan
The battery
A lamp
A light bulb
11
Which of the following is not a factor on Resistance:
Temperature
Current
Material
Thickness
12
Which of the following is true:
Wet and Dry cells are examples of Secondary Cells
Wet cells = dry paste, Dry cells = liquid electrolyte
Wet and Dry cells are rechargeable
Wet cells = liquid electrolyte, Dry cells = dry paste
13
Certain birds clean the ears of water buffalo by eating flies that nest in the ear. This is:
Mutualism
Competition
Commensalism
Predation
14
Carbon in the atmosphere is mostly in the form of:
Carbon dioxide
Methane
Carbon monoxide
Water
15
Which of the following is not a negative affect on astronauts
Memory Loss
RBC functioning
Radiation
Bone loss
16
Which of the following is TRUE:
Current is shared in a parallel circuit
The unit for current is anteaters
Current is not shared in a parallel circuit
The symbol for current is C
17
Which is true regarding the water molecule?
It has one covalent bond
It has one hydrogen atom
It has two oxygen atoms
It has two hydrogen atoms
18
Which of the following is considered Non-Renewable Energy Source?
Biomass
Geothermal
Solar
Nuclear
19
Pure Substances include:
Mechanical mixtures and solutions
Elements and Compounds
Mechanical mixtures and compounds
Solutions and Elements
20
A pond can support 12 turtles before it gets too crowded. Anymore and food is scarce. This is:
Abiotic limiting factor
Ecological niche
Biodiversity
Carrying Capacity
21
Which of the following is a metalloid?
Chromium
Silicon
Sulphur
Francium
22
In a dense jungle, taller trees get the most sunlight. This is an example of:
Commensalism
Mutualism
Predation
Competition
23
Which of the following is an example of static electricity?
Lightning
Direct Current
Alternating Current
Transmission Lines
24
Which of the following is not in the same class of elements as the others?
Chlorine
Francium
Nitrogen
Sulphur
25
Law of Attraction States...
Having any attractions is against the law
Electrons flow from positive terminals to negative terminals
Similar charges attract
Opposites attract
26
Which of these elements is the least reactive?
Oxygen
Fluorine
Chlorine
Bromine
27
Which of the following is NOT an inner planet?
Jupiter
Mars
Mercury
Venus
28
This process requires carbon dioxide and water and produces oxygen
Combustion
Photosynthesis
Leaching
Cellular respiration
29
Which of the following is true? Introduced species are:
All brought on purpose from another land
All non-native
All invasive in their new land
Never able to adapt to the new environment
30
A group of elements is:
A group of elements related by atomic mass
Located in a vertical column in the periodic table
Another name for a period in the periodic table
Located in a horizontal row in the periodic table
31
The element tin has a mass # of 119 and atomic number of 50. How many electrons does it have?
69
19
119
50
32
Which of the following groups of elements is least reactive?
Alkali metals
Alkaline earth metals
Noble gases
Halogens
33
Which of the following is TRUE
Ammeter measures voltage
Voltage is shared in a series circuit
the unit of voltage is Voltas
voltage is not shared in a series circuit
34
Invasive species change an ecosystem by altering nutrient cycles or energy flow. This impact is
Tourism
Ecological
Economic
35
The term "autotroph" literally means:
"Level mover"
"Plant eater"
"Omnivorous organism"
"Self-feeder"
36
The Big Bang Theory states that:
The universe was created in a second
A tiny particle grew larger really fast
Penny is in love Leonard
Space was created by a supersonic BANG
37
Put in order from smallest grouping to largest:
Population, community, ecosystem, biome
Biome, ecosystem, community, population
Community, population, ecosystem, biome
Ecosystem, biome, community, population
38
Why is electrical discharge dangerous?
It is not dangerous
Can cause death
Makes your hair stick up
Can cause a fire
39
Which of the following is TRUE?
The Sun is the biggest Star
At death stars can become blackholes
The hottest stars are orange in colour
A stars death depends on its initial temperature
40
Examples of abiotic limiting factors:
Sunlight availability, water availability, temperature
Food availability, water availability, climate
living space, food availability, availability of mates
Number of predators, oxygen level, climate
