Sample. Test Booklet. Subject: SC, Grade: 08 MEA Released 2009 Science Items Grade 8. - signup at to remove - Student name:

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1 Test Booklet Subject: SC, Grade: 08 MEA Released 2009 Science Items Grade 8 Student name: Author: Maine District: Maine Released Tests Printed: Monday October 08, 2012

2 1 What effect does gravity have on a person living on Earth? A It causes a person to have mass. B It causes a person to have weight. C It causes a heavy person to fall faster than a light person. D It causes a heavy person to fall slower than a light person. 2 The diagram below shows the chemical structure of water. What can be concluded about the structure of water? A It is an atom made up of two elements. B It is an atom made up of three elements. C It is a molecule made up of two elements. D It is a molecule made up of three elements. Page 1

3 3 The graph below shows the numbers of acorns and squirrels over five years. Which statement do the data in the graph support? A As the squirrel population increases, the number of acorns decreases. B As the squirrel population decreases, the number of acorns increases. C The squirrel population has no relationship to the number of acorns. D The squirrel population is directly related to the number of acorns. 4 Which organism is paired with a part it contains? A rabbit chlorophyll B microorganism stomach C oak tree lung D grass chloroplast 5 A bird with a long beak lives in an estuary. Which of the following is most likely the reason this bird survives? A The beak enables the bird to reach food in the mud. B The beak keeps the bird s head dry when it is feeding. C The beak attracts more mates. D The beak allows the bird to fly into the taller trees near the estuary. Page 2

4 6 A single-celled organism, such as the amoeba, uses its cell membrane to take in oxygen and remove carbon dioxide. Which organ system in humans has the same function as the cell membrane of the amoeba? A circulatory B digestive C nervous D respiratory 7 Which sentence explains why the Moon can be seen at night from Earth? A The Moon reflects light from the Sun. B The Moon burns gases that give off light. C The Moon reflects light from the lights on Earth. D The Moon absorbs light during the day and then gives off light at night. 8 What determines the gravitational pull on an object on the surface of the Moon? A the surface features of the Moon B the mass of the Moon C the rotational speed of the Moon D the distance of the Moon from Earth 9 Earth s seasons are caused by the planet s A tilt on its axis. B distance from the Sun. C speed of rotation on its axis. D speed of revolution around the Sun. 10 The picture below shows a lit bulb. Which sentence explains what happens to the electric energy as the light shines? A The electric energy gets used up. B The electric energy changes into light and heat energy and is destroyed. C The electric energy is created again after it produces light and heat energy. D The electric energy changes into light and heat energy and is not destroyed. 11 A boy on a skateboard is rolling along a flat paved walk. His skateboard hits a patch of gravel and slows down. Which phrase best explains what causes the skateboard to slow down? A mass of the gravel B mass of the skateboard C friction from the gravel D gravity on the skateboard Page 3

5 12 The diagram below shows layers of Earth s atmosphere. Which layer of the atmosphere has clouds and weather? A troposphere B stratosphere C mesosphere D thermosphere Page 4

6 13 In which of the following does all the genetic information come from just one parent? A B 14 The map below shows the Western Hemisphere. Coral fossils that are about 90 million years old have been found at site X. What do these fossils indicate? A Coral was once a land organism. B Coral migrated north of the equator. C Site X was once covered by a warm sea. D Site X was once located further north. C D Page 5

7 15 The diagram below shows three containers of gas. Which list correctly describes the gases in containers R, S, and T? A R = element, S = compound, T = mixture B R = compound, S = element, T = mixture C R = element, S = mixture, T = compound D R = mixture, S = element, T = compound Page 6

8 16 The picture below shows a food web. The harvest mouse population is decreasing. A logical reason for this decrease might be that A the song sparrow population has increased. B the smelt population has decreased. C the marsh hawk population has increased. D the snail population has decreased. Page 7

9 17 The tables below show information about two liquids and three solids. Derek was given two colorless liquids and a table listing their densities. He also was given three irregularly shaped solids. He measured the mass and volume of each solid. His results are shown above in the table on the right. a.) Find the densities of solids X, Y, and Z. b.) Predict which solid or solids will sink in liquid A. c.) Predict which solid or solids will float in liquid B. Page 8

10 18 A few years ago, a scientist surprised the world by cloning a sheep. Today, several other species of animals have been cloned. Other scientists have begun to think about cloning human beings. a.) In general terms, describe what makes cloning different from sexual reproduction. b.) Give one example of asexual reproduction and one example of sexual reproduction found in nature. Page 9

11 19 The table below shows data on Earth and Venus. Scientists have concluded that human life on Venus is not possible. a.) Choose three pieces of evidence from the table. b.) Explain in scientific terms how each piece of evidence you chose either supports or does not support this conclusion. Page 10 STOP