McGraw-Hill Science 2000, Texas Edition TKS Practice Test Grade 4, hapter 2 How Organisms re lassified Name ate
Use the illustration and your knowledge of science to answer Questions 1 to 4. Terrarium 1 terrarium is a model of a(an). 3 What is the role of the lizard in the terrarium? organism Producer ecosystem onsumer desert ecomposer climate oth producer and consumer 2 What is the role of the green plants in the terrarium? 4 o plants help animals survive in a terrarium? How could you best find out? Producers onsumers ecomposers Herbivores Remove the animals from the terrarium. Observe the terrarium Remove the plants from the terrarium. Observe the terrarium Make a second terrarium just like the first, only without animals. ompare the two terrariums over time. Make a second terrarium just like the first, only without the plants. ompare the two terrariums over time. Macmillan/McGraw-Hill TKS Science Grade 4, hapter 2 1
Use the following information and your knowledge of science to answer Questions 5 to 7. How did dinosaurs become extinct? The lvarez theory offers one answer to this question. ccording to the theory, a comet struck Earth millions of years ago. The comet raised huge dust clouds. The dust clouds blocked sunlight from reaching Earth s surface. Many plants died, and the dinosaur s food chain was broken. 5 If the theory is correct, the comet stopped the dinosaurs from carrying out which basic function of life? Taking in energy Responding to the environment Reproducing Moving from place to place 6 Which of these facts, if true, would provide evidence to support the lvarez theory? Many dinosaurs ate meat, not plants. Objects from space strike the Moon very often. Rocks from a huge crater in Mexico came from a comet. inosaur fossils are more common in some places than in others. 7 Which of these facts, if true, would provide evidence against the lvarez theory? Many dinosaurs ate meat, not plants. Objects from space strike Earth very rarely. Large dust clouds would settle to Earth within two or three days. Large dust clouds would settle to Earth within six months to a year. Macmillan/McGraw-Hill TKS Science Grade 4, hapter 2 2
8 Which rock layer holds the oldest fossils? Layer Layer Layer Layer Layer Layer Layer Layer 9 n acorn is the seed of an oak tree. Squirrels may carry acorns far away from where they find them. They eat many of the acorns. They drop other acorns on the ground. oes a squirrel carrying acorns help the oak tree in some way? If so, how? Yes. The squirrel helps the oak tree gain energy. Yes. The squirrel cleans up the ground near the oak tree. Yes. The squirrel might help the oak tree reproduce. No. The squirrel does not help the oak tree in any way. 10 Fossils are evidence of organisms that lived in the past. y studying fossils, what have scientists learned? Earth s living things have stayed the same Earth s living things have changed very much Earth s plants have changed very much. The animals have stayed the same. Most species that lived long ago are still alive today. Macmillan/McGraw-Hill TKS Science Grade 4, hapter 2 3
Use the following information and your knowledge of science to answer Questions 11 and 12. terrarium holds earthworms, soil, and plants. Every morning, a student squeezes the water bottle 20 times over the right side of the terrarium. 11 y observing the terrarium carefully every day, what can the student learn? Whether earthworms prefer a dry or moist habitat. How much water plants need to grow. How much water earthworms need to survive. How large earthworms can grow. 12 fter two weeks, what can the student do to the terrarium to help the earthworms survive? dd insects and other animals. Stop adding water. Mix dead plants and food scraps into the soil. Place the terrarium in a cool, dark place. Macmillan/McGraw-Hill TKS Science Grade 4, hapter 2 4
13 Why is Texas hotter in July than in January? In July, Earth is closer to the Sun than it is in January. In July, Earth is tilted so that Texas faces the Sun directly. The Sun shines more brightly in July than in January. The Sun is larger in July than in January. 14 Why would a home owner add solar panels to the roof? To keep heat from escaping the house in winter To keep the roof dry To reflect sunlight to keep the house cool To collect solar energy to use in the house Macmillan/McGraw-Hill TKS Science Grade 4, hapter 2 5
NSWER KEY and ORRELTIONS: Question nswer TKS McGraw-Hill Science Grade 4 textbook 1 4.3 p. 50 2 4.11 p. 54 3 4.11 p. 54 4 2.9 p. 49 5 3.8 p. 44 6 5.11, 4.3 p. 44 7 5.11, 4.3 p. 44 8 5.11 p. 41 9 2.9 p. 37 10 5.11 p. 40 11 3.8, 5.2 p. 51 12 3.8, 2.9, 5.5 p. 57 13 4.6 p. 60 14 5.8 p. 60 Macmillan/McGraw-Hill TKS Science Grade 4, hapter 2 6