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Science 10
Final Exam
Part B - Written
Teacher: ____________
Time Limit: 75mins
Name: _____________
Date: _____________
Final Mark - ___/66_
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1. Identify each of the following characteristics of the common spotted owl as a structural,
physiological or behavioural adaptation. – 5 marks
(a) Its feathers have white spots on a brown background. ___________________
(b) It maintains constant blood sugar levels. ___________________
(c) It lines its nest with grass. ___________________
(d) Its eyes face front to give depth perception. ___________________
(e) It places cow dung at the front of its nest to hide from predators. ___________________
2. What is ecology? – 2 marks
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3. The hookworm uses its teeth to attach to the wall of a dog’s intestine so that it can feed on
the dog’s blood. Explain why the hookworm is considered a parasite. – 2 marks
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4. Describe each of the following as a producer, consumer, or decomposer (more than one
may apply). – 5 marks
(a) breaks down fallen leaves
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(b) does not need to consume other organisms to live
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(c) assists with biodegradation
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(d) is the first step in energy flow through an ecosystem
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(e) may consume another consumer
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Refer to The Carbon Cycle, page 5 of your Data Pages, to answer questions 5 - 6.
5. How many gigatonnes of carbon are stored in each of the following locations? – 3 marks
(a) the atmosphere ____________
(b) dissolved as organic carbon in the upper levels of the ocean ____________
(c) organic matter in the soil ____________
6. Examine the carbon exchange values to answer the following questions. – 4 marks
(a) Is carbon moving faster into the oceans or out of the oceans? ____________
(b) Does agriculture move more carbon into the air or out of the air? ____________
(c) Why does the exchange data for the fossil fuel combustion show carbon moving into the
atmosphere but none moving out of the atmosphere?
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7. How does adaptive radiation make it possible for several different species of finch to live
together in the same location without having to compete with each other for food? - 2 marks
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8. Where is each particle located in an atom? – 3 marks
(a) proton
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(b) neutron
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(c) electron
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9. Draw a Bohr diagram showing the number of protons and electrons in an atom/ion of:
- 3 marks
(a) C
(b) F–
(c) Al3+
10. Identify each of the following compounds as either ionic or covalent, and name them.
– 6 marks
(a) (NH4)3P ____________________________
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(b) OBr2 _______________________________
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(c) FeF3 _______________________________
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(d) SnS2 ______________________________
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11. Write the formula of each compound. – 6 marks
(a) sulfur trioxide- _________________________________________________
(b) cesium sulphate - _______________________________________________
(c) gold(III) sulphide - ______________________________________________
(d) sodium sulfide - ________________________________________________
(e) ammonium sulphide - ____________________________________________
(f) tetraphosphorus decasulfide - ______________________________________
12. Balance the following skeleton equations. – 4 marks
(a) ____ Al + ____ Cl2 → ____ AlCl3
(b) ____ CH4 + ____ O2 → ____ CO2 + ____ H2O
(c) ____ Ca(NO3)2 + ____ Cu2SO4 → ____ CaSO4 + ____ CuNO3
(d) ____ Na2CO3 + ____ Ni(NO3)3 → ____ NaNO3 + ____ Ni2(CO3)3
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13. Write skeleton equations for the following chemical reactions and then balance them. Be sure
to check your formulas carefully before you begin to balance. – 8 marks
(a) calcium fluoride + potassium → potassium fluoride + calcium
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(b) aluminum hydroxide + hydrogen bromide → aluminum bromide + water
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(c) chromium(III) iodide + potassium carbonate → chromium(III) carbonate + potassium iodide
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(d) hydrogen nitrate + barium carbonate → barium nitrate + water + carbon dioxide
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14. Classify each reaction as synthesis, decomposition, single replacement, or double
replacement. – 4 marks
(a) NiBr2 + ZnSO4 → ZnBr2 + NiSO4
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(b) 2Au + Fe2O3 → 2Fe + Au2O3
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(c) 2Pb + O2 → 2PbO
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(d) 2TiBr3 → 2Ti + 3Br2
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15. Create a graph to represent the following motion. Include labels.
A person cycles 10 km in 30 min and then stops for 15 min. Then, the cyclist returns home in 15
min. – 5 marks
16. A boat travels 280 m [E] in a time of 120 s. What is the boat’s average velocity? – 2 marks
(show your work)
17. How much time does it take a car travelling south at 12 m/s to increase its velocity to 26 m/s
south if it accelerates at 3.5 m/s2 south? – 2 marks (show your work)