Science_10_final - BC Learning Network

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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
___________________________________________________________________________
___________________________________________________________________________
__________________________________________________________________
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
___________________________________________________________________________
___________________________________________________________________________
4. Describe each of the following as a producer, consumer, or decomposer (more than one
may apply). – 5 marks
(a) breaks down fallen leaves
______________________________________________________
(b) does not need to consume other organisms to live
______________________________________________________
(c) assists with biodegradation
______________________________________________________
(d) is the first step in energy flow through an ecosystem
______________________________________________________
(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?
________________________________________________________________________
________________________________________________________________________
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
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
8. Where is each particle located in an atom? – 3 marks
(a) proton
______________________________________________________________________
(b) neutron
_____________________________________________________________________
(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 ____________________________
__________________________________
(b) OBr2 _______________________________
__________________________________
(c) FeF3 _______________________________
___________________________________
(d) SnS2 ______________________________
__________________________________
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
____________________________________________________________________________
(b) aluminum hydroxide + hydrogen bromide → aluminum bromide + water
____________________________________________________________________________
(c) chromium(III) iodide + potassium carbonate → chromium(III) carbonate + potassium iodide
____________________________________________________________________________
(d) hydrogen nitrate + barium carbonate → barium nitrate + water + carbon dioxide
____________________________________________________________________________
14. Classify each reaction as synthesis, decomposition, single replacement, or double
replacement. – 4 marks
(a) NiBr2 + ZnSO4 → ZnBr2 + NiSO4
___________________________________
(b) 2Au + Fe2O3 → 2Fe + Au2O3
___________________________________
(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)
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