proprie orange DS.
Vocabulary: consumer, ecosystem, energy pyramid, equilibrium, food chain, population, predator, prey,
producer
Prior Knowledge Questions (Do these BEFORE using the Gizmo.)
The Food Chain Gizmo shows a food chain with hawks, snakes, rabbits, and grass. In this simulation, the
hawks eat snakes, the snakes eat rabbits, and the rabbits eat grass.
1. Producers are organisms that do not need to eat other organisms to obtain energy.
A. Which organism is a producer in this food chain?
B. Where does the producer get its energy?
2. Consumers must eat other organisms for energy. Which organisms are consumers in this food chain?
MOVE HAS
NODNEMOVE
Gizmo Warm-up
The SIMULATION pane of the Gizmo shows the current population, or number of
each organism in the food chain.
1. What are the current populations of each organism?
Hawks
Snakes:
Rabbits:
Grass
2. Select the BAR CHART tab, and click Play ( ). What do you notice about
each population as time goes by?