Science Unit 1 Test

Name:

Question 1: Which statements explain what happens when right whales eat the fish larva as they swim in the ocean? Select the one of the correct answers.

• Whales get matter they need to grow.
• Whales get energy they need to swim.
• Energy is transferred from the whales to the fish larva as the whales eat.
• Energy and matter are transferred from the fish larva to the whales as the whales eat.
• Matter is transferred from the water to the whales and the fish larva as the whales eat.

Question 2: The scientists want you to model the flow of energy and matter through the ecosystem as fish larva eat the algae. The scientists have a diagram showing the Sun, fish larva, and algae. Which answer accurately shows the flow of energy.

• Sun --> Algae --> Fish Larva
• Sun --> Fish Larva --> Algae
• Algae --> Fish Larva --> Sun
• Fish Larva --> Sun --> Algae

Question 3: The scientists add both air and water to the model. They add arrows to show the direction in which matter and energy flow among the different parts in the model. They want you to label each arrow to show if the arrow represents only the flow of energy, only the flow of matter, or the flow of both energy and matter. Choose the answer that correctly lables each arrow to show what it represents by choosing one of the following for each box. - Energy only - Matter only - Both energy and matter

• 1: Energy only 2: Energy only 3: Energy only 4: Both Energy and matter
• 1: Matter only 2: Matter only 3: Matter only 4: Both energy and matter
• 1: Energy only 2: Matter only 3: Matter only 4: Both energy and Matter
• None of the above.

Question 4: In researching how plants might be able to live in the system shown in Figure 1, the student reads about a famous experiment. In this experiment, a scientist planted a willow tree in a pot of completely dry soil. The scientist let the willow tree grow outside, exposed to sun and rain for 5 years, and did not allow any soil to be added or taken away from the pot. The results of the experiment are shown in Table 1. Complete the sentences to explain what can be concluded from the experiment.

• 1: Air 2: Water 3: Soil
• 1: Soil 2: Air 3: Water
• 1: Soil 2: Water 3: Air
• None of the above

Question 5 Which of the following provided the energy that the tree used to grow over the course of the experiment?

• Water
• Compost
• The Sun
• Insects burrowing in the pot

Question 6: Where does the energy start in both food webs?

• Consumers such as the Robin and Lizard.
• Producers such as the Wattle and Tea Tree.
• Predators such as Snakes and Native Cats
• Decomposers that are too small to be shown on the food web.

Question 7: Use figure 2, the Food Web Diagram to answer the following question. There was a disease that killed off almost all of the Wattle plants in the ecosystems. Which food web, A or B, would be the most impacted and in what way? use details from both food webs in your response.

Question 8: What happens when a consumer eats a producer?

• The matter and energy that are taken in are used for growth and movement.
• The energy is destroyed.
• The matter is lost.
• The amount of energy available increases.

Question 9: What do decomposers do to help keep energy and matter flowing in an ecosystem?

• They use the energy of the sun to store energy and make themselves grow.
• They break down dead materials to return the matter to the environment.
• They eat living things to gain energy and grow.
• They do not keep matter flowing because they destroy it for energy.