CCEA GCSE Science Single Award Higher Tier: how the 280 marks split across Biology, Chemistry, Physics and two Practical Skills booklets, the precise wording examiners actually credit, and legal on-the-fly calculator techniques for kinetic energy and echo depth questions.
อ่าน 3 นาทีอัปเดตเมื่อ: 3 ก.ย. 2569
ภาพรวมข้อสอบ
จำนวนฉบับ
5
คะแนนเต็ม
280
เวลาสอบ
6ชม. 15นาที
ประเภทคำถาม
12
ฉบับ
เวลา
คะแนน
จำนวนข้อ
น้ำหนักคะแนน
ประเภทคำถาม
Unit 1, Biology
1ชม.
60
8
25%
Structured recall and data analysis, 6-mark extended response (QWC)
Unit 2, Chemistry
1ชม.
60
9
25%
Structured chemistry recall and equations, 6-mark extended response (QWC)
Unit 3, Physics
1ชม.
60
9
25%
Calculations, circuit diagrams and force analysis, 6-mark extended response (QWC)
Practical Skills, Booklet A
2ชม.
30
2
8%
Hands-on practical investigation and graphing
Practical Skills, Booklet B
1ชม. 15นาที
70
10
17%
Practical theory, data processing and analysis, 6-mark extended response (QWC)
เกณฑ์เกรด
A*ABC*CDEFGU
ข้อกำหนดเครื่องคิดเลข
Scientific calculators are expected and needed throughout, especially in Physics and the practical booklets for rate, energy and echo calculations. The standard JCQ rule applies: no computer algebra or symbolic manipulation function, no communication with another device, and no retrievable information of any kind, including formulae, notes or programs, stored in the calculator. Clear the calculator's memory before the exam or activate its exam mode; a manual reset alone does not clear stored data.
AO1: Demonstrate knowledge and understanding of scientific ideas, and scientific techniques and procedures. (40%)
AO2: Apply knowledge and understanding of, and develop skills in, scientific ideas, and scientific enquiry, techniques and procedures. (40%)
AO3: Analyse scientific information and ideas to interpret and evaluate, make judgements and draw conclusions, and develop and improve experimental procedures. (20%)
วัตถุประสงค์: Avoid the common error of using grams instead of kilograms in the kinetic energy formula, which makes the final answer wrong by a factor of a thousand.
ใช้เมื่อใด: Any Unit 3 Physics question asking for kinetic energy from a given mass and speed.
ขั้นตอน
Convert the mass from grams to kilograms first, dividing by 1000, then calculate half multiplied by mass multiplied by speed squared as one continuous chain on the calculator before writing down the final answer.
ข้อควรระวังในการสอบ: This is a live calculation performed during the exam on the calculator's ordinary arithmetic keys. CCEA and JCQ rules do not allow any formula, note or program to be stored in a calculator before the exam. If your calculator has an exam mode, activate it.
Echo depth in one chain
Casio fx-83/85 series (scientific)
วัตถุประสงค์: Avoid forgetting to halve the round-trip distance when finding a depth from an echo time.
ใช้เมื่อใด: Physics questions that give a time for sound or ultrasound to travel to a surface and back, and ask for the depth or distance to that surface.
ขั้นตอน
Multiply speed by time to get the total round-trip distance, then divide by 2 in the same calculation to get the one-way depth, rather than writing down the round-trip distance and dividing separately afterwards.
ข้อควรระวังในการสอบ: This is an on-the-fly calculation using the calculator's normal keys during the exam. No formula or worked method may be stored in the calculator beforehand; clear the calculator's memory before the exam.
Rounding only the final answer
Casio fx-83/85 series (scientific)
วัตถุประสงค์: Avoid losing a mark for leaving a long decimal unrounded, or rounding an intermediate step too early and shifting the final answer.
ใช้เมื่อใด: Any calculation question that specifies a number of decimal places or significant figures for the answer.
ขั้นตอน
Complete the full calculation in one continuous sequence without rounding any intermediate step, then round only the number shown on the display at the end to the decimal places or significant figures the question specifies.
ข้อควรระวังในการสอบ: This is standard live use of the calculator's display and rounding during the exam. No formula, conversion table or note may be stored in the calculator's memory beforehand.
ข้อผิดพลาดที่พบบ่อย
1mediumคะแนนที่เกี่ยวข้อง: 1Co-ordination and control
Candidates write spine when the biology of a reflex arc requires spinal cord, treating the two terms as interchangeable.
วิธีหลีกเลี่ยง: Keep the terms separate: the spine is the bony column, the spinal cord is the nerve tissue running through it that a reflex arc actually uses.
2mediumคะแนนที่เกี่ยวข้อง: 1Rates of reaction
A line of best fit for a gas-producing reaction is drawn rising throughout, without showing the plateau where the reaction has finished and gas production has stopped.
วิธีหลีกเลี่ยง: Identify the point where the readings stop changing and draw the line level from there, then state in words that the reaction is complete at that point.
3mediumคะแนนที่เกี่ยวข้อง: 1Practical skills
An anomalous reading is left out of a mean calculation without stating that it has been excluded or why.
วิธีหลีกเลี่ยง: Write a short note identifying the anomalous value and stating that it has been excluded before giving the mean of the remaining readings.
4highคะแนนที่เกี่ยวข้อง: 1Rates of reaction
Collision theory answers say there are more collisions rather than an increased frequency of successful collisions, missing the word successful that the mark scheme rewards.
วิธีหลีกเลี่ยง: Use the full phrase: increased collision frequency, and increased frequency of successful collisions, when explaining why a rate of reaction changes.
5mediumคะแนนที่เกี่ยวข้อง: 2Energy calculations
Kinetic energy calculations use the mass in grams rather than converting to kilograms first, giving a final answer wrong by a factor of a thousand.
วิธีหลีกเลี่ยง: Convert the mass to kilograms, dividing by 1000, before you substitute it into the kinetic energy formula, and do that conversion as the first step of your written working.
6mediumคะแนนที่เกี่ยวข้อง: 1Organic chemistry
Hydrocarbons are defined as containing carbon and hydrogen, without the word only, which leaves the definition technically incomplete.
วิธีหลีกเลี่ยง: Always include the word only: a hydrocarbon is a compound containing carbon and hydrogen only.
7mediumคะแนนที่เกี่ยวข้อง: 1Waves
Echo depth calculations use the full round-trip distance from speed multiplied by time, without dividing by two to get the one-way distance to the surface.
วิธีหลีกเลี่ยง: Calculate speed multiplied by time to get the round-trip distance, then divide by two in the same working to get the depth, every time an echo question is asked.
8mediumคะแนนที่เกี่ยวข้อง: 1Electrical circuits
Circuit diagrams place the ammeter in parallel and the voltmeter in series, the opposite of their correct positions.
วิธีหลีกเลี่ยง: Fix the rule as a pair: an ammeter goes in series in the main circuit loop, a voltmeter goes in parallel across the component it is measuring.