Knowledge Mastery Competition

Choose the biotic factor.

• water

• soil

• plants

• rocks

Determine the role of “fungi” in an ecosystem.

• producers

• decomposers

• consumers

• scavengers

Choose the answer that clarifies the meaning of a habitat

• the place where organisms live.

• all the organisms that live in an area.

• all the members of one kind of organism.

• .

  none of the above answers.

What is the main source of energy in an ecosystem?

• producers

• consumers

• decomposers

• the sun

Grass ------ grasshopper ---------mouse----- owl

Determine the role  of the mouse in the food chain.

• producer

• second

  producer

• second

  consumer

• r

  decomposer

Decide which of the followings shows the amount of energy passed from one organism to another one.

• energy pyramid

• food web

• food chain

• food web

  +

  food chain

Exclude the one which is not a source of carbon dioxide.

• evaporation process

• breathing

• burning process

• decomposing process

Which type of succession could happen a volcano eruption?

• secondary succession

• primary succession

• both primary and secondary successions

• no succession happens.

Name the tool that you can use to measure the temperature of an object.

• spring scale

• pan balance

• thermometer

• ruler

Circle the wrong statement.

• Scientists use “scientific method” to study the natural world.

• Scientists must use all the steps of the scientific method in an order.

• Scientists use data to support their conclusions.

• Scientists ask more questions to get more answers and new ideas.