Grade 10 Academic Science
Multiple Choice Practice Exam 2012
Answer are provided at the end of the test
BIOLOGY
1. Where does photosynthesis occur?
a. Chloroplasts
b. Endoplasmic Reticulum
c. Golgi Body
d. Mitochondria
e. Nucleus
f. Vacuole
2.
Which cell organelle removes wastes from the cell?
a. Chloroplasts
b. Endoplasmic Reticulum
c. Golgi Body
d. Mitochondria
e. Nucleus
f. Vacuole
3.
Which function occurs in the mitochondria?
a. Cellular division
b. Cellular respiration
c. Secretion of mucus
d. Release of hormones
e. Maintenance of internal turgor pressure
4.
What occurs during the mitosis phase PROPHASE?
a. Nuclear membrane breaks down and chromosomes appear
b. Chromosomes line up in the middle of the cell
c. Sister chromatids separate and move to opposite sides of the cell
d. A new nuclear membrane begins to form
5.
A dog’s cell has 34 pairs of chromosomes. One cell undergoes mitosis. In this example, what is the
product?
a. One new cell with 34 chromosomes
b. Two cells with 34 chromosomes in each new cell
c. Two cells with 34 pairs of chromosomes in each new cell
d. Four cells with 34 chromosomes in each new cell
e. Four cells with 34 pairs of chromosomes in each new cell
6.
Which of the following is NOT a reason for cell division?
a. Removal
b. Repair
c. Replace
d. Reproduction
7.
What does SOLUTE mean?
a. Homogeneous mixture of two or more elements
b. Liquid is something that dissolves a solid
c. Measure of how much solid is found in a solution
d. A substance (e.g., solid) dissolved in a liquid
8.
What is “...the movement of a fluid (e.g., water) across a membrane toward an area of high solute
concentration” called?
a. Active Transport
b. Diffusion
c. Dilution
d. Osmosis
e. Solution
9.
What is a mutation?
a. Undesired product of an environmental factor
b. Mass of cells that produce undesired growths
c. Random change in DNA
d. Predetermined outcome of chromosome duplication
e. Cell division gone wrong
10. What is “...a system of one or more organs and structures that work together to perform a specific body
function” called?
a. Cell
b. Organism
c. Organ System
d. Tissue
11. Your esophagus is a muscular tube that connects your mouth and your stomach. The muscles are special.
They are smooth AND they contract and relax without control or direction from your brain. How is this latter
process described?
a. Accessory
b. Involuntary
c. Systematic
d. Unaware
e. Unconscious
12. Which of the following is NOT a blood vessel?
a. Artery
b. Capillary
c. Platelet
d. Vein
13. What function do arteries perform for the circulatory system?
a. Allow exchange of gases, nutrients and wastes between the blood, body fluids and tissues
b. Carry blood away from the heart
c. Carry de-oxygenated blood to the heart
d. Pump blood throughout the body
14. What is the main purpose of the respiratory system?
a. Gas exchange
b. Movement of oxygen in blood
c. Get oxygen into the lungs
d. Maintain an equal balance of O2 and CO2 levels throughout the body
15. What organ produces insulin?
a. Gall Bladder
b. Kidney
c. Liver
d. Stomach
e. Pancreas
16. What is the primary function of the stomach?
a. Absorption of nutrients into the bloodstream
b. Absorption of water from indigestible food
c. Hold and churn food
d. Release bile to breakdown fat
e. Tear apart food physically
CHEMISTRY
17. You have an ion that contains more electrons than protons. What type of ion do you have?
a. Element
b. Ionic Ion
c. Negative Ion
d. Neutral Ion
e. Positive Ion
18. How many electrons occur in the VALANCE (i.e., outer shell) of the element sulfur?
a. 5
b. 8
c. 16
d. 18
e. 32
19. Which one of the following compounds is an ionic compound?
a. CO2
b. CO
c. NaCl
d. ClO3
20. What is the ionic charge of the fluorine ion?
a. 1+
b. 1c. 7d. 9+
e. 10
21. What is the electron configuration of the Cl1- ion?
a. 2,8
b. 2,8,7
c. 2,8,8
d. 17
22. What is the electron configuration of the Al3+ ion?
a. 2,8
b. 2,8,3
c. 2,8,8
d. 13
23. What is the chemical formula for carbon tetrachloride?
a. CaCl
b. C4Cl
c. CCl2
d. CCl4
24. What is the chemical formula for lead (IV) oxide?
a. PbO2
b. Pb4O2
c. Pb2O4
d. PbO
25. What are the products of a combustion reaction?
a. Oxygen and hydrocarbons
b. Water and oxygen
c. Water and carbon dioxide
d. Hydrocarbons and water
e. Acid and water
26. What type of chemical reaction is shown in the chemical equation 4Na + O 2
a. Acid-Base
b. Decomposition
c. Double Displacement
d. Single Displacement
e. Synthesis
2Na2O
27. What is the GENERAL FORMULA for a single displacement reaction?
a. A + B
AB
b. AB
A+B
c. AB + C
A + CB
d. AB + CD
AD + CB
28. A double displacement reaction produces MgSO4 + HBr. What were the reactants?
a. MgH and BrSO4
b. MgSBr and HO4
c. HSO4 and MgBr
d. HBr and MgSO4
e. H2SO4 and MgBr2
29. What is the chemical name of FeBr2?
a. Iron bromide
b. Iron (II) bromide
c. Iron dibromide
d. Iron bromine
30. What is the chemical name of Ca3(PO4)2?
a. Calcium phosphate
b. Tricalcium diphosphate
c. Calcium (II) phosphorus tetraoxide
d. Calcium phosphorus oxide
31. A solution with pH5 is...
a. Acidic
b. Basic
c. Neutral
d. Distilled Water
32. Which of the following statements is true about acids?
a. Acid strength increases as pH decreases
b. Another term for acid is “alkaline”
c. Acid turns red litmus paper blue
d. Acids do not conduct electricity
e. Acids do not react with bases
33. You combine 20g of sodium chloride with 80g of oxygen. What is the total mass of the products?
a. 4g
b. 60g
c. 100g
d. 1600g
CLIMATE CHANGE
34. What percentage energy from the Sun that reaches the Earth is absorbed by all the plants?
a. Less than 1 percent
b. 30 percent
c. 51 percent
d. 70 percent
35. What process moves energy from the sun to the Earth?
a. Advection
b. Conduction
c. Convection
d. Radiation
36. What is a convection current?
a. Horizontal movement of heat energy
b. Vertical movement of heat energy
c. Electromagentic flolw
d. Movement of electrically-charged particles
37. Freezing and condensation are changes of state. What is required for these state changes?
a. Cloud formation
b. Less heat
c. More heat
d. Additional greenhouse gases
38. Which element occurs most frequently in the troposphere?
a. Argon
b. Carbon dioxide
c. Helium
d. Nitrogen
e. Oxygen
39. In which layer of the atmosphere does the ozone layer that absorbs UV radiation occur?
a. Exosphere
b. Mesophere
c. Stratosphere
d. Thermosphere
e. Troposphere
40. Land next to large bodies of water is typically warmer in winter and cooler in summer than inland areas?
What characteristic has this climatic effect?
a. Heat capacity of water or ability of water to absorb energy
b. Ocean currents moving thermal energy
c. Lake effect snow
d. Reflection of energy by water away from the Earth’s surface
41. In the carbon cycle, combustion moves carbon from terrestrial to the atmosphere? How does combustion
occur naturally in the carbon cycle?
a. Humans burning coal and oil
b. Mammals respiring CO2
c. Volcano eruptions
d. Mammals emitting methane
42. Which of the following is NOT a greenhouse gas?
a. Carbon dioxide
b. Hydrogen
c. Methane
d. Nitrous oxide
e. Water Vapour
43. What part of Earth’s climate system holds all the water on Earth?
a. Atmosphere
b. Biosphere
c. Hydrosphere
d. Lithosphere
44. What is the term defined as “...the measure of how much of the Sun’s radiation is reflected by a surface?”
a. Albedo
b. Heat Sink
c. Radiation
d. Reflection
45. What is “...the natural process in which atmospheric gases and clouds absorb infrared radiation emitted from
the Earth’s surface and radiate it to heat the Earth’s surface” called?
a. Heat Capacity
b. Heat Sink
c. Energy Transfer
d. Greenhouse Effect
e. Feedback Loop
46. Increase heat causes polar ice to melt. The melting releases more carbon which increases carbon levels in
the atmosphere. This action causes temperatures to increase. What is this cyclic process called?
a. Feedback Loop
b. Heat Source
c. Ice Cap Melting
d. Greenhouse Effect
47. What is Thermohaline Circulation?
a. Movement of heat in water around the world’s oceans
b. Flow of water around the world’s oceans driven by differences in water temperature and salinity
c. Transfer of salt from regions of high concentration to regions of low concentration
d. Recurring change in the Pacific winds and ocean currents that brings warm and moist air to the
west coast of South America
e. None of the above
48. Which of the following is NOT a factor impacting Earth’s climate?
a. Ocean currents
b. Altitude
c. Proximity to large bodies of water and wind direction
d. Longitude
49. Water vapour in the atmosphere is greatest in which season?
a. Fall
b. Spring
c. Summer
d. Winter
50. Which of the following is NOT a component of the Earth’s climate system?
a. Atmosphere
b. Hydrosphere
c. Lithosphere
d. Living Things
e. None of the above. They are all components of Earth’s climate system.
PHYSICS - OPTICS
51. What is the term means ”...light changing direction as it goes from one medium to another?”
a. Internal reflection
b. Diffuse
c. Reflection
d. Refraction
52. What type of image is always created by a diverging lens?
a. Illusion
b. Real
c. Upright
d. Virtual
53. A material that does not transmit any incident light is...
a. Opaque
b. Transparent
c. Translucent
d. Invisible
54. A light ray strikes a mirror at an angle of 45O. What is the angle of reflection?
a. 90O
b. Equal to the incident ray
c. 0O
d. 45O
e. Both B and D
55. Light travels through air at a speed of 3.00 X 10 8 m/s. When the same light travels through diamond, the
speed is 1.24 X 108 m/s. What is the Index of Refraction? Recall n = c/v where c is the speed of light in air
and v is the speed of light in the other medium
a. 1.76
b. 2.42
c. 0.41
d. 4.24
56. Which of the following is NOT a primary colour of light?
a. Blue
b. Green
c. Red
d. Yellow
57. This sight problem causes light from a near object to be focussed behind the retina
a. Far-sightedness
b. Near-sightedness
c. Presbyopia
d. Negative meniscus
58. Based on its Index of Refraction (n), which of the following substances is most optically dense and bends
light the most?
a. Water, n = 1.33
b. Sapphire, n = 1.76
c. Lead, n = 2.60
d. Silicon, n = 3.96
59. Light moves from a slow medium to a fast medium. Which way will light bend?
a. Toward the normal
b. Direction of travel does not change
c. Away from the normal
d. Reflects back into the slow medium
60. An object is placed between 2F and F in front of a convex (converging) lens. What describes the image that
forms?
a. The image is upright and the same size as the object
b. The image is inverted and virtual
c. The image is inverted and larger than the object
d. The image is inverted and smaller than the object
e. No image forms
61. Where must the object be placed to form a virtual image when using a convex lens?
a. Beyond 2F
b. At 2F
c. Between 2F and F
d. At F
e. Between F and the lens
62. Parallel light rays reflect off a converging mirror. Where do the rays travel?
a. Reflect in different directions
b. Cross together through the Focal Point
c. Cross together through the Centre of Curvature
d. Reflect back parallel from the mirror
63. When you combine the Primary Colours of Light, you make....
a. White Light
b. Black Light
c. Ultraviolet Radiation
d. Colours
64. Which one of the following properties is NOT part of the SALT acronym?
a. Type
b.
c.
d.
Shape
Attitude
Location
65. What is “...an image that can be seen on a screen as a result of the light rays actually arriving at the image
location’ called?
a. Reflection
b. Virtual
c. Real
d. Vertex
e. None of the above
66. Which part of the eye opens and closes to let more or less light in?
a. Cornea
b. Iris
c. Lens
d. Pupil
e. Retina
67. You are using a converging lens. You place an object in front of the lens, but no image forms. Where have
you placed the object?
a. Beyond 2F
b. At 2F
c. Between 2F and F
d. At F
e. Between F and the lens
ANSWERS
1
A
17
C
34
A
51
D
2
F
18
A
35
D
52
D
3
B
19
C
36
B
53
A
4
A
20
B
37
B
54
E
5
C
21
C
38
D
55
B
6
A
22
A
39
C
56
D
7
D
23
D
40
A
57
A
8
D
24
A
41
C
58
D
9
C
25
C
42
B
59
C
10
B
26
E
43
C
60
C
11
C
27
C
44
A
61
E
12
C
28
E
45
D
62
B
13
B
29
B
46
A
63
A
14
A
30
A
47
B
64
B
15
E
31
A
48
D
65
C
16
C
32
A
49
C
66
B
33
C
50
E
67
D