Grade 11 Controlled Test - Physical Sciences Grade 10-11-12.
CAPRICORN DISTRICT
NATIONAL SENIOR CERTIFICATE
GRADE 11
PHYSICAL SCIENCES CONTROLLED TEST NO. 1
20 MARCH 2015
READINESS TEST 2011 NAME OF SCHOOL _________________________________________
MARKS:
100
TIME: 2 HOURS
This paper consists of 12 pages including the cover page and the data sheets
Page 1
physical sciences
Grade 11 March 2015
INSTRUCTIONS AND INFORMATION
1. The paper consists of TWO sections.
SECTION A (20)
SECTION B (80) 2. Answer ALL the questions in the answer book 3. No-programmable calculators may be used 4. Appropriate mathematical instruments may be used in this question paper 5. Data sheets are attached for your use 6. Give brief motivations, discussions, et cetera where required 7. Number the answers correctly according to the numbering system used in this
question paper
Page 2
Physical Sciences Grade 11 March 2015
SECTION A QUESTION 1 MULTIPLE CHOICE QUESTIONS
Various options are provided as possible answers to the questions. Each question has only one correct answer. Write only the letter (A-D) next to the question number (1.1-1.10) in the answer book. 1.1. Consider the following vector diagram
A
C
B
The vector which represents the resultant force of the other two, is... A. AB
B. BC
C. AC
D. CB
(2)
1.2. Tsholo, standing in a lift, observes a 10 N mass-piece suspended from a spring balance fixed to a roof of the lift. He sees that the reading on the spring balance is less than 10 N for a short time interval. During this short time interval the lift is ... A. not moving
B. accelerating upwards
C. accelerating downwards
D. moving with a constant velocity
(2)
1.3. A learner is riding his bicycle in a school yard on a level ground. The bicycle hits the wall of a classroom and reverses. The learner is injured. This can be explained in terms of ........ A. Newton's Second Law of motion
B. Inertia
C. Newton's Third Law of motion
D. Newton's Law of Universal Gravitation
(2)
Page 3
Physical Sciences Grade 11 March 2015
1.4. A car moving forward experiences a decrease in its velocity. This could be due to ..........
A. The inertia of the car is too little
B. The resultant force acts in the backward direction
C. The resultant force acts in the forward direction
D. The balanced forces that act upon it while the road is rough.
(2)
1.5. The gravitational force which the earth exerts on the moon is A. Directly proportional to the distance between their centres
B. Inversely proportional to the mass
C. Inversely proportional to the product of the mass of the moon and
the mass of the earth
D. Inversely proportional to the square of the distance between their
centres.
(2)
1.6. Two forces of magnitude 7 N and 3 N respectively, act simultaneously on an object. Which one of the following cannot be the resultant of the two forces? A. 3 N
B. 5 N
C. 9 N
D. 10 N
(2)
1.7. The phenomenon that allows water strider to walk on water' A. Capillarity
B. Adhesion
C. Evaporation
D. Surface Tension
(2)
1.8. What forces occur between molecules of ammonia (NH3)? A. Ion-ion forces
B. Non-polar ? non-polar forces
C. London forces
D. Hydrogen bonds
(2)
Page 4
Physical Sciences Grade 11 March 2015
1.9. According to the VSEPR theory, the shape of a aluminium chloride (AlCl3) molecule is:
A. Trigonal planar
B. Trigonal bi-pyramidal
C. Trigonal pyramidal
D. Tetrahedral
(2)
1.10. Which one of the following properties of H2O (s) causes it to be less dense than H2O (l)?
A. Dipole-dipole forces
B. Hydrogen bonding
C. Van der Waals forces
D. Ionic dipole
(2)
[20]
Page 5
Physical Sciences Grade 11 March 2015
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