Question 12,13,14

Identify TWO types of energy conversion take placing the diagram. (Tick two boxes)

• Light to Electric

• Electric to Kinetic

• Heat to Light

• Kinetic to Potential

The Sankey Diagram represents the energy transfer in a desk lamp. From the diagram, how many joules of energy are released as light energy.

• 100 J

• 75 J

• 125 J

• 0 J

In this sankey diagram, not all electrical energy is output as light energy. Some of the energy is waste (or dissipated) energy. Use the information on the diagram to calculate much energy is dissipated.

• 25 J

• 10 J

• 125 J

• 75 J

This is a Sankey Diagram of a typical energy-saving lamp. Calculate the % efficiency of the lamp.
 $Efficiency\ =\ \frac{\text{Energy output }}{\text{Energy input}}\ \times\ 100\%$  

• 75 %

• 25 %

• 125 %

• 50%

Substances that do not allow current to flow through them are called

• Insulators

• Conductors

Which ecosystem is this food web found in

• Salt Marsh Ecosystem

• Coral Reef Ecosystem

• Woodland Ecosystem

• Savannah Ecosystem

In the food web, identify the producer

• Grasshopper

• Owl

• Green plant

• Snail

What is the name of the piece of apparatus used to calculate the frequency of plants in a habitat

• pooter

• quadrat

• sweepnet

• beating tray

The above data was collected by students while carrying out an ecological study. Suggest how the students identified the various plants.

• By using a KEY

• By using a Sweep net

• By using a Beating Tray

• By using a Food Chain

This is a................. used to collect small insects.

• pooter

• pitfall trap

• beating tray

• quadrat