SPRING Print Student Name. Science GRADE PRACTICE TEST

Transcription

1 Print Student Name SPRING 2018 PRACTICE TEST GRADE 7

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3 DIRECTIONS Read each question carefully. For each multiple-choice question, decide which is the best answer. For each question that asks you to explain or draw your answer, write or draw your answer in the answer space provided A Choice - q Which organisms are always multicellular? A Cacti B Yeast C Algae D Bacteria NM_17-18_Gr7 Practice_Test_LP Page 3

4 140541A Choice - w Which animal is best adapted to survive in the tundra? A B Lizard Rabbit C D Monkey Heron NM_17-18_Gr7 Practice_Test_LP Page 4

5 139175A Choice - e Two students think that wintertime thunderstorms are always followed by snow. Which of the following would be the best way to test this hypothesis? A Measure the snowfall after the first winter thunderstorm B Compare data collected for one week with data from another group C Tape record a show on tornadoes and their destruction D Analyze winter weather records from the past five years NM_17-18_Gr7 Practice_Test_LP Page 5

6 139219A Drawing - r The illustration below shows a food chain of an ecosystem found in the Sandia Mountains. Forest Food Chain Pine Cone Field Mouse Red-tailed Hawk Mushroom In the answer space provided, select two organisms from the food chain shown and describe their niche in the ecosystem. NM_17-18_Gr7 Practice_Test_LP Page 6

7 Composite - t Students helped scientists document the numbers of five species of butterflies in New Mexico. The students walked along a trail and counted how many of each species of butterfly they saw. The table below shows their results. Code Letter A B C D Species Red-spotted purples Tawny emperors Longwings Monarchs Number of Butterflies E Brushfoots 2 In the answer space provided, A. Use the Code Letters in the first column of the table in an expression that shows the average number of butterflies the students counted. B. Use the Code Letters in the first column of the table in an expression that shows the ratio of monarch butterflies to the total number of butterflies the students counted. NM_17-18_Gr7 Practice_Test_LP Page 7

8 Composite - y Brook trout live in streams and rivers. They need clean water that is free of pollution and sediments. The diagram below shows water cycling through an ecosystem where brook trout are found. In the answer space provided, A. Describe two ways that water enters into rivers to provide the brook trout population with enough clean water to survive. B. Explain how polluted or sediment-filled water can enter into the rivers where brook trout live. NM_17-18_Gr7 Practice_Test_LP Page 8

9 139186A Choice - u Some elements, such as uranium and plutonium, are radioactive. These elements decay over time to form A living elements B different elements C larger compounds D chemical reactions Choice - i Chromosomes contain traits that are passed from one generation to the next A Choice - o Centipedes are important organisms in temperate forest ecosystems. They live under decaying materials and hunt for small insects at night. What is most likely the role of the centipede in the temperate forest ecosystem? A Decomposer B Herbivore C Predator D Producer Which of the following are the parts of a chromosome that influence one or more traits? A Plasma B Carbohydrates C Genes D Membranes NM_17-18_Gr7 Practice_Test_LP Page 9

10 139215A Drawing - a A student hypothesizes that greenhouse gases cause global warming. The student records the average high temperature for each month. The data collected are shown in the table below. Monthly Temperatures for Northern Alaska Month Average High Temperature ( C) January 1.9 February 4.2 March 5.4 April 11.0 May 12.0 June 18.9 July 19.5 August 17.4 September 15.8 October 12.7 November 10.3 December 2.4 In the answer space provided, identify two other things the student can do to investigate his hypothesis A Drawing - s Other planets in the solar system, such as Venus, have an atmosphere and orbit the sun. However, Earth is the only planet in the solar system that can sustain life as we know it. In the answer space provided, identify two factors that allow organisms to live on Earth A Drawing - d Cardinals are a species of bird. A population of cardinals has been isolated on an island. While living in the new environment, the population developed adaptations over time that helped the cardinals survive. In the answer space provided, A. Predict one way that this population could be different from the original population of cardinals and describe what would have caused the change. B. Explain how to determine, without using DNA analysis, whether these cardinals have become a different species. NM_17-18_Gr7 Practice_Test_LP Page 10

11 140625A Choice - f A new cold medicine will be studied for its effectiveness. Which sample of people suffering cold symptoms would give the most reliable predictions of the drug s effectiveness among the entire adult population? A Choice - g The picture shows a praying mantis capturing another organism for food. A 130 middle-aged men and women B 130 military men C 130 teenage girls D 130 men and women of different ages Which of these is an adaptation that helps the praying mantis capture its prey? A Blending in with the environment B Flying long distances to find water C Producing many offspring D Detecting noises with sonar NM_17-18_Gr7 Practice_Test_LP Page 11

12 139210A Choice - h Which process results in offspring that are the most genetically different from their parents? A Division of bacteria cells B Mitosis in human skin cells C Budding in hydra cells D Fertilization of sex cells A Choice - j In 1900, infectious diseases accounted for 8 out of 10 deaths in the United States. In 2000, infectious diseases were responsible for only 2 out of 10 deaths. Which of the following has been most responsible for this change? A The development of a variety of antibiotics and vaccines B The use of technology to transmit ill patients records C The modification of bacteria and viruses using genetic engineering D The ability to see inside the body with X-rays NM_17-18_Gr7 Practice_Test_LP Page 12

13 139207A Drawing - k Researchers at a toothpaste company wanted to do a study to find out whether their brand of toothpaste would be recommended by dentists. The researchers asked their own dentists to give out samples of the toothpaste to their clients. Both the dentists and their clients filled out questionnaires concerning the quality of the toothpaste. The dentists and their clients were paid for filling out the questionnaires. The results were revealed in the advertisement below. Brush with X! Kids love the taste! Fights cavities Freshens breath X! Studies show that four out of five dentists recommend X! In the answer space provided, A. Identify a source of bias in this investigation and explain why it is a bias. B. Describe two ways to improve the investigation that will eliminate sources of bias. NM_17-18_Gr7 Practice_Test_LP Page 13

14 140562A Choice - l The illustration shows an arm bending. Biceps Triceps Elbow Which of these needs to occur in the triceps in order for the arm to bend at the elbow? A The thumb needs to contract. B Skin needs to be rigid. C Muscles need to extend. D Nutrients need to be in bones A Choice - ; Sarah notices a butterfly flying around in her garden. She wonders whether this butterfly traveled from a colder climate. Sarah can best answer her question by A capturing the butterfly and observing it for one week B researching butterflies and migration on the Internet C planting plants in her garden that attract butterflies D drawing the butterfly and analyzing the body structures A Choice - 2) In many ways, Earth is unique from the other planets in the solar system. Living things have not been found on other planets. Which of these is most important for life to thrive on Earth? A Active volcanoes B Granitic crust C Oceans of liquid water D Eroding rocks NM_17-18_Gr7 Practice_Test_LP Page 14

15 139190A Drawing - 2! The illustration below shows an animal cell and a plant cell. Plant Cell Animal Cell In the answer space provided, describe one difference and one similarity between animal cells and plant cells. NM_17-18_Gr7 Practice_Test_LP Page 15

16 139223A Drawing - 2@ The list below shows several traits of an individual. Bone structure Plays guitar Ability to taste Eye color Uses a tool In the answer space provided, identify which of the traits listed are inherited traits and which are learned traits. You may use a chart to display your answer. THIS IS THE END OF THIS SESSION. NM_17-18_Gr7 Practice_Test_LP Page 16

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18 Copyright 2018 by New Mexico Public Education Department All rights reserved. No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the copyright owner. Portions of this work were previously published. Printed in the United States of America.