11-14 Sample test questions taken from a number of files

1. This question is about eclipses. Here are three objects.

Earth SPACE Sun SPACE Moon

Fit them to the correct blanks in the following sentences.

(i) In an eclipse of the Sun the ………… comes between the ……….... and the ……........

(ii) In an eclipse of the Moon the shadow of the .………..... falls on the …………....

2. (a) in which of the following circuits will the bulb light up?
(b) in which circuit will the bulb be brightest?


3. Two children, Sarah, who weighs 300N and James who weighs 400N are sitting on opposite ends of a seesaw.
(a) is the seesaw balanced? Explain.
(b) if not who will go down?
(c) how could the seesaw be balanced (two ways)?

4. Which would be heavier, a statue of your Physics teacher made of steel (density 7500 kg/m3) or a statue of the same size and of the same person made of granite (density 4000 kg/m3)?

5. The bimetal strip shown in the next diagram is at 20 ^oC. Draw what you think it will look like if it is cooled to - 20^oC.


6. If the levers are to balance what are the missing forces (F₁ and F₂) in the following two diagrams?



7. Suggest some ways in which the western world can reduce its use of energy.



8. There are two water towers (shown in the diagram), both are filled with water to the same height but one has a surface twice as big as the other.
If the pressure at the bottom of tower marked A is 50 000 Pa what is the pressure at the bottom of tower B?









9. A dimetrodon was a dinosaur with a large sail on its back. In the morning these dinosaurs used to stand facing north - south. Why?







10. The diagram shows a ship using an echo sounder to measure the depth of the sea. The results are shown as two blips on an oscilloscope, one is made when the sound is sent out and the other when it returns to the ship after reflecting from the seabed. If the blips are 0.5 s apart and the speed of sound in water is 5000 m/s how deep is the sea.