1.
State what is meant by a finite resource. [1]
JD SCIENCE
Unit 6 worksheet — C6 Global challenges
Answer all questions. Show working. Answers are in a separate file on the Worksheets page — do not look at them until you have finished.
2.
State what is meant by a renewable resource. [1]
3.
State what is meant by potable water. [1]
4.
State what is meant by desalination. [1]
5.
State what is meant by waste-water treatment. [1]
6.
State what is meant by life-cycle assessment. [1]
7.
State what is meant by recycling metals. [1]
8.
State what is meant by phytomining. [1]
9.
State what is meant by bioleaching. [1]
10.
State what is meant by an alloy. [1]
11.
Grace is asked about a finite resource in a OCR Chemistry paper.
(a) Describe a finite resource. [2]
(b) Explain why a finite resource is important in this topic. [3]
12.
Grace is asked about a renewable resource in a OCR Chemistry paper.
(a) Describe a renewable resource. [2]
(b) Explain why a renewable resource is important in this topic. [3]
13.
Grace is asked about potable water in a OCR Chemistry paper.
(a) Describe potable water. [2]
(b) Explain why potable water is important in this topic. [3]
14.
Grace is asked about desalination in a OCR Chemistry paper.
(a) Describe desalination. [2]
(b) Explain why desalination is important in this topic. [3]
15.
Grace is asked about waste-water treatment in a OCR Chemistry paper.
(a) Describe waste-water treatment. [2]
(b) Explain why waste-water treatment is important in this topic. [3]
16.
Grace is asked about life-cycle assessment in a OCR Chemistry paper.
(a) Describe life-cycle assessment. [2]
(b) Explain why life-cycle assessment is important in this topic. [3]
17.
A tap produces 8 dm³/min. Volume in 5 minutes [3]
18.
Recycling aluminium uses 5% of the energy of extraction. Energy saved as a percentage [3]
19.
A bottle has a mass of 40 g. How many bottles in 2.0 kg [3]
20.
Salt water is 3.5% salt. Mass of salt in 200 g of seawater [3]
21.
A filter removes 92% of particles. Particles remaining from 250 mg [3]
22.
Cost of desalination is £1.20 per m³. Cost for 15 m³ [3]
23.
Grace carries out a OCR-style required practical linked to using resources and water. This is a typical OCR required-practical style question.
(a) Identify the independent variable and the dependent variable. [2]
(b) State one control variable and explain why it must be controlled. [2]
(c) Suggest one improvement or source of error and how it affects the result. [2]
24.
Grace carries out collecting valid data for using resources and water. This is a typical OCR required-practical style question.
(a) Identify the independent variable and the dependent variable. [2]
(b) State one control variable and explain why it must be controlled. [2]
(c) Suggest one improvement or source of error and how it affects the result. [2]
25.
Grace carries out drawing a graph for using resources and water. This is a typical OCR required-practical style question.
(a) Identify the independent variable and the dependent variable. [2]
(b) State one control variable and explain why it must be controlled. [2]
(c) Suggest one improvement or source of error and how it affects the result. [2]
26.
Grace carries out evaluating a method about using resources and water. This is a typical OCR required-practical style question.
(a) Identify the independent variable and the dependent variable. [2]
(b) State one control variable and explain why it must be controlled. [2]
(c) Suggest one improvement or source of error and how it affects the result. [2]
27.
Compare a finite resource with a renewable resource. [4]
28.
Compare a renewable resource with potable water. [4]
29.
Compare potable water with desalination. [4]
30.
Compare desalination with waste-water treatment. [4]
31.
Apply your knowledge of recycling metals to this situation: saves energy vs extraction [3]
32.
Apply your knowledge of phytomining to this situation: burn plants to get ash [3]