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WorksheetsGrade 9 Science Exam Review
Total questions: 50
Worksheet time: 34mins
Which is not an example of a chemical reaction?
Substance changes colour
A precipitate is formed
Substance breaks in half
Change in temperature
A pure substance is made up of only one particle
True
False
"A change in which the composition of a substance remains the same and no new substance has been created"
Physical change
Chemical change
Color change
Gas production
"An element that has properties of both metals and non-metals"
Metal
Non-metal
Metalloid
Element
Which family does "Na" belong to?
Alkaline Earth Metals
Alkali Metals
Noble Gases
Halogens
Which family is highly reactive, and is a gas at room temperature?
Noble Gases
Alkali Metals
Alkaline Earth Metals
Halogens
What do you call a row on the periodic table?
Period
Family
Metals
Metalloid
Which scientist stated all matter is made up of atoms, the atoms are all the same for one substance, and different for different substances
Rutherford
Chadwick
Dalton
Bohr
Who stated that there are neutral particles, called neutrons, in the nucleus, roughly the same size as protons
Einstein
Chadwick
Bohr
Rutherford
What is the test for carbon dioxide gas?
Flaming splint
Glowing splint
Calculate the density of a metal with a mass of 56 g and a volume of 15 cm^3 (cubed)
2.8 g/cm^3
9.8 g/cm^3
3.7 g/cm^3
3.1 g/cm^3
What diagram is this?
Bohr-Rutherford
Lewis dot
What is the outermost orbital shell of an element called?
Valence shell
Outer shell
Chadwick shell
What is the law of electric charges?
Like repel, unlike repel, charged and neutral attract
Like attract, unlike attract, charged and neutral repel
Like repel, unlike attract, charged and neutral attract
A flow of electrons in one direction through an electric circuit
Ex-battery
Direct Current
Alternating Current
A flow of electrons that alternates in direction in an electric circuit
Ex- wall outlet
Direct Current
Alternating Current
More electrons than protons results in a
Positive charge
Negative charge
Neutral charge
Equal electrons and protons results in
Positive charge
Negative charge
Neutral charge
Rub a piece of wool with nylon. What charges does each material have?
Wool and Nylon are neutral
Wool - positive, Nylon negative
Wool – negative, Nylon – positive
What unit is used to measure resistance?
Ohms
Volts
Amperes
Celsius
What unit is used to measure potential difference?
Voltage
Amperes
Ohms
A load has 2.0 A of current flowing through it. The voltage across the load is 9.0 V. Calculate the resistance of the load
4.5 Ohms
6.8 Ohms
2.3 Ohms
4.3 Volts
A list of materials arranged in order of their tendency to gain
electrons
Periodic table
Circuit
Electrostatic Series
A shift in the position of electrons in a neutral object that occurs when a charged object is brought near it
Electrostatic series
Control device
Induced charge separation
Load
An electric cell that may be used only once
Secondary cell
Load
Primary cell
Direct current
An organism that creates its own food
Producer
Consumer
Carnivore
An organism that must eat other animals only
Herbivore
Omnivore
Carnivore
The non-living physical and chemical components of an ecosystem
Abiotic
Biotic
Earth’s solid outer layer
Biosphere
Lithosphere
Hydrosphere
Atmosphere
The zone around the Earth in which life can exist
Lithosphere
Atmosphere
Hydrosphere
Biosphere
Is wind biotic or abiotic?
Abiotic
Biotic
All the living organisms and their physical and chemical environment
Biosphere
Environment
Ecosystem
Carbon dioxide + water + energy -> oxygen + sugar
Respiration
Photosynthesis
A representation of the feeding relationships within an ecosystem
Ecological pyramid
Ecosystem
Food chain
Food web
The mass of all living organisms in a given area
Ecosystem
Biomass
Ecological Pyramid
Animal mass
A non-native species whose intentional or accidental introduction negatively impacts the natural environment
Native species
Invasive species
Predator
Herbivore
Are the decaying remains of a dead tree...
Biotic
Abiotic
A star is 300 000 000 000 km from Earth. What is this distance in astronomical units?
1 AU = 150 000 000 km
1550 AU
8908 AU
2000 AU
1236 AU
The inner layer of the solar atmosphere
Chromosphere
Photosphere
Core
Corona
The hottest part of the Sun, where temperatures reach 15 000 000 °C
Core
Corona
Convective Zone
Fire
How many meters are in one light year?
9.46 x 10 m
8.3 x 10^9 m
9.46 x 10^15 m
What is the conversion factor for km to light years?
Divide by 9.46 x 10^12
Multiply by 9.46 x 10^12
Divide by 7.37 x 10^2
An extremely dense quantity of matter in space from which no light or matter can escape
Black Hole
Space
Sun
Supernova
The apparent change in position of an object as viewed from two different locations that are not on a line with the object
Supernova
Osteoporosis
Parallax
What is the order of the planets?
(from the Sun to Neptune)
Mars, Venus, Earth, Mercury, Saturn, Uranus, Jupiter, Neptune
Earth, Venus, Mercury, Saturn, Jupiter, Uranus, Neptune, Mars
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune
Gases and charged particles expelled above an active sunspot
Solar prominence
Solar flare
Black hole
Sun
A piece of metal or rock in our solar system that is smaller than an asteroid
Comet
Planet
Asteroid
Meteoroid
A celestial object that orbits the Sun and has a spherical shape but does not dominate its orbit
Dwarf planet
Fake planet
Small planet
Unidentified planet
Causes the loss of bone mass on Earth. Astronauts can lose up to two percent of their bone mass each moth they are in microgravity conditions
Parallax
Osteoporosis
Sunspot
Paralysis
In which galaxy is our Solar System located?
Andromeda Galaxy
Quasar
Milky Way
Solar System
