Yr8 test 1 December Rev 01-10-14

Mhrawf Gwyddoniaeth Yr8 Test1 Photosynthesis and Circuits

DO NOT write on this test paper

1/ Copy and complete the following word equation for photosynthesis:

Carbon Dioxide ______ ______ ______(3)

2/ What should be written above the arrow on the above equation? ______(2)

3/ What is the green substance found in plant leaves that carries out the photosynthesis? (1)

4/ Where is this substance found in a plant cell? (1)

5/ Look at the table below and the pictures on the next page to help you answer these questions:

Source of Energy / Organism
Krill, Fish / è / Adele penguin
Squid, Krill, Fish / è / Crabeater Seal
Squid, Krill, Fish / è / Emperor penguin
Krill, Fish / è / Humpback Whale
Krill / è / Icefish, toothfish
Emperor Penguin, Crabeater Seal,
Adele Penguin / è / Killer Whale
Zooplankton / è / Krill
Emperor Penguin, Crabeater Seal,
Adele Penguin,
Petrel / è / Leopard Seal
Fish / è / Petrel
Photosynthesis (sun) / è / Phytoplankton
Krill / è / Squid
Phytoplankton, Zooplankton / è / Zooplankton

6/ Explain using examples from your food chain the term ‘Pyramid of numbers’ (2)

7/ Explain what happens to Biomass in a food chain. (1)

8/ What happens to the size of organisms as you go up the food chain? (1)

9/ What is the original energy source for all the organisms that live on the surface of the Earth? (1)



10) a) What are the two types of charge? (2)

b) Which type of charge is light and easy to move? (1)

c) What do similar charges do to each other? (1)

d)  If an object contains equal numbers of each type of charge we say it is ______(1)

e)  If an object contains different numbers of each type of charge we say it is______(1)

f) Explain the difference between ‘static’ and ‘current’ electricity (3)

11) Match the letter to the word in the box.

You will need to use one word more than once.

components Amperes cells faster

energy wires charges current ammeter

The voltage from the ____(a)____ provides the ____(b)____ to push the charges around the circuit. The energy carried by the ____(c)____ is used up as the charges pass through the ____(d)____ and ____(e)____. If we add more cells to the circuit the ____(f)____ get more energy, so they will flow ____(g)____. We call the flow of charges the ____(h)____ and it is measured in units called ____(i)____ using an ____(j)____

(10 marks)

12) Look at the two circuits below:

Circuit A Circuit B

a)  What would happen to the current in circuit A if another bulb was added? (1)

b)  What would happen to circuit A if one bulb was broken? (1)

c)  What would happen to circuit B if one bulb was broken? (1)

d)  What type of circuit is circuit A (1)

e)  What type of circuit is circuit B (1)

f)  Copy circuit A and add one ammeter to measure the current and one voltmeter to measure the voltage across one bulb. (1)


13) QWC

This question must contain a minimum of two paragraphs and be between 15 and 17 lines long and contain scientific language:

When you rub a balloon on your jumper you can make the balloon stick to the wall explain why.

Listening to learners

Q14 What is your target level for this year in science? Level ____

Q15) What is your current level in science? Level ____

Q16) How do you think you are doing in science? Very well Well Poor

Q17) How has your teacher taught you? Very well Well Poor

Q18) How often do you use the science web site? Often Sometimes Never

Q19) What do you need to do to improve your literacy in science?

______

Q20) What do you need to do to improve your numeracy in science?

______

Q21) Describe how you can improve your performance in science.

______

Q22) What can your teachers do to help you improve more in science?

______