How many carnivore animals can be found in this diagram?

• 1

• 2

• 3

• 4

Based on this food web, choose 3 food chains that can be found. (CHOOSE 3 CORRECT ANSWER)

• plants→ snail →toad → kingfisher

• plants→ water beetle →toad → kingfisher

• plants→ tadpole →fish → kingfisher

• plants ←snail →toad → kingfisher

• plants→toad → kingfisher

Why arrow is very important in food chain and food web? (CHOOSE 2 CORRECT ANSWERS)

• Shows direction of organism being eaten by which organism

• Movement of animals

• Show energy flow

• Predator-prey relationship

What does it mean when an arrow points from a tadpole to a fish in a food web?

• The small fish provides energy to the tadpole

• The tadpole eat the fish

• The fish eats the tadpole

• The tadpole and fish share food

What does it mean by melting point?

• The temperature when the

  substance changes

  from liquid to solid

• The temperature when the

  substance changes

  from liquid to gas

• The temperature when the

  substance changes

  from gas to liquid

• The temperature when the

  substance changes

  from solid to liquid

Choose substance that exist as liquid in room temperature of 20^oC

• Carbon

• Bromine

• Oxygen

• Iodine

• Copper

Which substance exist as gas at room temperature of 20^oC?

• Aluminium

• Bromine

• Iodine

• Oxygen

What is the similarity between evaporation and boiling?

• Both occur only at high temperatures

• Both require a vacuum to happen

• Both involve a phase change from liquid to gas

• Both only occur on the surface of the liquid

Choose one difference between evaporation and boiling

• Evaporation happens throughout the liquid, while boiling happens only at the surface

• Boiling does not require heat, while evaporation does

• Boiling happens throughout the liquid, while evaporation happens only at the surface

• Evaporation happens at specific temperature, while boiling happens only at the boiling point

Choose the circuit that will produce the brightest lamps

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