Which viewpoint would be least prone to error when reading the scale?
Which forms of energy does the radio produce?
Which transfer(s) of energy occur when a firework is lit (chemical → …)?
Are the forces between molecules stronger in ice or water?
Which shape has the smallest surface area for a given volume?
In which clean tube will the water rise higher (capillary action)?
Which way does a mercury meniscus curve, and what is the shape of the water meniscus?
A. Mercury concave; water flat
B. Mercury convex; water concave
C. Mercury flat; water convex
The split pins A and B hold an iron bar tightly; what happens when the iron bar is heated?
B. A gap will appear between the pins and the blocks
Are these telephone wires drawn as they appear in the summer or winter?
Which glass beaker is more likely to crack when filled with hot water?
Which way will the bimetallic strip bend if heated (brass over iron)?
Which liquid is represented by the density curve that is most dense at 4°C?
What will happen to the water level in the beaker if the heat source is removed and the air in the glass balloon cools?
When the switch is closed in the thermostat circuit, what happens immediately?
B. The heating element will warm
Once the bimetallic strip in the circuit gets hot, what happens to the contact?
E. Contact will remain once the strip gets hot
F. Contact will be broken once the strip gets hot
If temperature remains constant, what will happen to the volume of trapped gas if the pressure is doubled?
Which point A on the bars will get hottest first?
Antwort
Which liquid would boil last?
If a flag was raised on the pole between cooler sea and warm land, on which side would it fly?
If left in the sun, in which can will water take longer to warm?
B. Matt black painted tin can
If a solar panel were in the northern hemisphere, which way should it face for maximum effectiveness?
Which way is east in the diagram?
What temperature will the water be after melting 1 kg of ice with 340,000 J?
What will be the temperature of ice made from mineral (salty) water?
A thin wire under tension passes through a block of ice. What will happen?
A. The block will be cut in half
C. The wire will eventually drop out of the bottom of the block
What happens when salt is added to boiling water?
At what temperature does water boil at altitude?
If a package weighed 80 kg in New York, how much would it weigh at the North Pole?
Which shape is the most rigid?
Which is the least dense and which the most dense (Ice, Water, Oil)?
Where is the pressure greatest in a drum of water?
In which direction is the pressure greatest on the fish (arrows A, B, C, D)?
Which identification of the layers is correct?
C. Both layers are petrol
Which barometric reading would you expect on a rainy day?
What force holds a nail in a piece of wood?
Which force cannot act remotely (without contact)?
When did the vehicle reach a constant speed (points 1–5 on the graph)?
Which shape is in equilibrium?
Which line most likely represents the centre of gravity of the L-shaped object (A, B or C)?
When a gun is fired, the potential chemical energy is mainly transferred to which forms?
C. Kinetic energy and heat/light
D. Elastic and gravitational energy
For the gear train shown (A 20 teeth, B 10 teeth; effort applied to the small gear), what does gear A provide?
B. Magnifies distance (speed)
Which line shows a plane accelerating to take off?
Where is the smaller effort in the pulley arrangements?
Which gear is rotating anticlockwise at 30 revolutions per second?
Is the crescent shape concave or convex?
C. Both concave and convex
Which magnets will repel?
How many colours are there in a rainbow?
Which indicator (A, B or C) shows the correct conventional current direction in the junction?
During electrolysis of water in the beaker, at which electrode will more bubbles be produced?
Match each circuit to the correct table of switch positions and lamp state.
A. Circuit 1 → Table 1; Circuit 2 → Table 2
B. Circuit 1 → Table 2; Circuit 2 → Table 1
C. Both circuits match Table 1
At what point, if any, will gamma rays be stopped by the thin sheets?
D. None of these (not fully stopped)
At which point, if any, will beta rays be stopped by the thin sheets?
At which point, if any, will alpha rays be stopped by the thin sheets?
Best complete the energy transfers for a hydroelectric power station (potential energy of falling water → ? → electrical energy).
C. Kinetic energy of turbine
If two identical balls start their descent simultaneously as shown, which hits the ground first?
Which tyre is fitted to the vehicle carrying the greater load?
If the piston is depressed, at which point is the oil under the greater pressure?
Which seesaw is in equilibrium?