SCIE 4001
Section A - Multiple Choice
Section A - Multiple Choice Answers
Multiple Choice on Section B Matter and Materials
Multiple Choice on Section B Matter and Materials Answers
Section B - Matter and Materials
Section C - Energy
Section D - Structures and Mechanisms
 

Multiple Choice

1. Four machines that convert electrical energy to mechanical energy were tested for fuel efficiency. The results of the test are shown in the chart below:

Machine

Unit of Electrical Energy Consumed

Equivalent Units of Mechanical Energy Produced

A

120

100

B

130

100

C

135

100

D

160

100

Which machine produced the most heat energy?

2. A wet shirt is put on a clothesline to dry on a sunny day. The shirt dries because water molecules
A  gain heat energy and condense
B  gain heat energy and evaporate
C  lose heat energy and condense
D  lost heat energy and evaporate.

3. A metal rod used to stir up Bar-B-Que coals gets hot because heat is transferred from the coals to the “hand end” along the rod by
A Continual emission of electromagnetic radiation from the hot coals.     
B the movement of mass inside the rod          
C the vibration of particles inside the rod       
D the interchange of kinetic and potential energy of particles inside the rod

4. Mary-Ann is investigating how the thickness of a rubber band affects the pitch of the sound when plucked. The manipulated variable is
A thickness of the rubber band             
B tension on the rubber band
C length of the rubber band                  
D material used to make the rubber band  

5. Four objects were left out in the sunlight for the same duration of time (hours). Which object will feel hottest to the touch?
A a wooden chair     
B a large glass mirror      
C an iron pot      
D a styrotex ice cooler

6. A student lowers one end of his pencil in a glass of water and to his amazement he observes that it looks bent.  Which statement below best explains the behavior of light waves that accounts for the student’s observation?
A Some materials absorb light waves of certain frequencies.
B Some materials reflect some of the waves and absorb some.
C Light waves change direction when they meet a new medium. 
D Light waves are emitted by some materials

Use the information in the circuit to answer the next two questions. The connection wires are assumed to have negligible resistance.

ans

7.When the switch S is opened the lamp L will:
A not glow because the circuit is open
B glow brightly because the circuit is closed
C not glow because the circuit is closed
D glow brightly because the circuit is open

8. When the switch S is closed lamp L will:
A glow
B not glow
C glow less brightly
D glow more brightly

9. In which medium will sound travel fastest?
A A vacuum
B Air
C Water
D Metal

10. Which of the following is NOT a feature of the image formed by a plane mirror?
A Same size as the object
B Same distance behind the mirror as the object is in front of it
C Upside down but same size as the object
D Upright and same size as the object

11. The sure test for a magnet is
A attraction by another magnet
B repulsion by another magnet
C freely suspending the magnet and allowing it to come to rest
D Measure its strength

12.A bimetallic strip made from copper and iron is heated. Given that that copper expands more than iron for the same temperature range which diagram below best represents the shape of the bimetallic strip after heating?

ans

 

13. Which class of elements best conducts electricity?
A. Metals
B. Non metals
C. Semi metals
D. Noble (inert) gas

14. Within a substance atoms that collide frequently and move independently of one another are most likely in a
A. Liquid
B. Solid
C. Gas
D. Crystal

15. Which of the following contributes to making a mercury in glass thermometer quick acting?
A. The long glass stem
B. The narrow capillary tube
C. The color of mercury
D. The shape of the bulb

16. Temporary hardness of water can be removed by
A. Filtering
B. Boiling
C. Addition of aluminum
D. Addition of scum

thermometer_01

17. The reading of this thermometer will drop most if the bulb is
A. exposed to sunlight
B. exposed to steam
C. placed in cold water
D. placed in ice

18. What is the range of this thermometer
A. 55 degrees Celsius
B. 0 degrees Celsius to 110 degrees Celsius
C. -10 degrees Celsius to 110 degrees Celsius
D. 110 degrees Celsius

19. The best way to separate iron from dust if contaminated is by
A. Sifting with a sieve of fine wire
B. Dissolving in water and filtering
C. Dissolving in water and evaporating
D. Passing a strong magnet over the mixture

20. A compound X, melts at 90ºC, boils at 120 ºC and is not soluble in water. What method would you use to obtain a sample of X from a mixture of X and water?
A. Chromatography
B. Distillation
C. Gravity filtration
D. Use of a separating funnel

21. A few cm3 of food colouring were added to a test tube of water. 1 cm3 of this solution was placed in another test tube of water. This was repeated 4 times and the resulting solution still had traces of colour. This experiment best provides evidence that matter is made up of:
A. Atoms
B. Ions
C. Molecules
D. Particles

22. When an acid is added to a base it produces a
A. Salt only
B. Salt and water only
C. Salt and gas only
D. Gas and water only

23. A mixture contains particles of solids suspended in a small volume of liquid. Heating will decompose the solid. What process is most effective for separating the particles in this suspension?
A. Evaporation
B. Heating
C. Freezing
D. Filtration

24. Lots of soap is needed when washing with hard water. This is due to the formation of
A. Magnesium stearate
B. Sodium ethanoate
C. Calcium hydrogen stearate
D. Emulsion

25. Which of the following suggests that matter is made up of particles in continuous motion?

A. Water boils at 100 degrees Celsius
B. Iron rusts when exposed to air and water
C. Methane burns in oxygen to produce gases
D. We can smell the perfume of a lady walking past

26. Which one of the following statements about the kinetic theory of matter is NOT correct.
A. Matter is made up of particles called atoms and molecules
B. Changes in the states of matter are due to changes in the motion of the particles.
C. The higher the temperature the faster the particles move.
D. In going from solid to liquid to gas, the motion of molecules decreases and the forces of attraction between them increase.

27. When the temperature of a liquid is decreased, the particles slow down, the attractive forces between them become stronger and stronger until their positions become fixed.  This change in the arrangement and motion of particles is referred to as:
A. Melting
B. Freezing              
C. Condensing        
D. Boiling

28. Which of the following explains why toothpaste is alkaline?
A. To reduce the high acidity of the stomach juices
B. To neutralize acids produced by bacteria in the teeth
C. To enhance action of salivary juice which is alkaline
D. To aid digestion by amylases which work best in an alkaline environment

lever

29. Figure 1 is an example of:
A. Inclined Plane
B. Pulley
C. Screw
D. Lever

 

Fig. 1
 

30. Which of the following statements is true for Figure 1.
A. b is the fulcrum, c is the load, a is the effort
B. b is the load, c is the fulcrum, a is the effort
C. b is the fulcrum, a is the effort, c is the load.
D. b is the load, a is the fulcrum, c is the effort

31. If the mechanical advantage of a simple machine is 4, then the     
A. The load is 4 times the effort
B.  Effort is 4 times the load
C.  The efficiency is 4%
D. The work output is 4 times the input

32. A knife is an example of a (an)
A. Inclined Plane
B. Wedge
C. Ramp
D. Pulley

33. An example of a second class lever with fulcrum, load and effort in this order is:
A A hammer
B A wheel barrow
C A shovel lifting soil
D A nut cracker

34. Which force keeps you from floating up in the air?
A. friction
B. magnetism
C. push
D. gravity

35. An example of wheel and axle is:
A. A screw
B. A door knob
C. A door hinge
D. A car engine

36. All of the following statements are correct except
A. Liquids of lower densities float in liquids of higher densities
B. The density of a substance is its mass per unit volume
C. Substances become denser when they are hotter
D. The mass of a substance cannot be changed by the location and shape of the substance

37. Two observable effects that a force can have on a body are to change its
A. Temperature and size only          
B. Size and motion   
C. Motion and colour                
D. Size and colour

38. When an acid is added to a base it produces a
A. Salt only
B. Salt and water only
C. Salt and gas only
D. Gas and water only

     
Concept by Kishore Lal. Programmed by Kishore Lal... Copyright © 2015 Kishore Lal. All rights reserved.