PHOTO/DRAWINGS
1 The photograph below shows a cactus plant.
Which feature helps a cactus plant prevent water loss in a hot, dry desert environment? (1) green color (2) flowers (3) waxy surface (4) branches
Base your answers to questions 2 and 3 on the information below about two animals, the sea anemone and the clownfish, and on your knowledge of science. Clownfish are tiny, omnivorous fish that find shelter from predators in the poisonous tentacles of sea anemones. The sea anemones sting their prey to capture food, but the clownfish are not hurt b y the stinging tentacles. The clownfish clean the tentacles of the sea anemone and scare off butterfly fish, which consume sea anemones.
2 The relationship between the sea anemone and clownfish is best described as
(1) competitive (2) beneficial (3) predatory (4) harmful
3 The clownfish is classified as an omnivore because it eats (1) both plants and animals (2) neither plants nor animals (3) only plants (4) only animals
DIAGRAMS 1 The diagram below represents a plant cell. Letter X represents a structure in the cell.
X
Which cell structure is represented by X? (1) nucleus (2) cytoplasm (3) cell wall (4) cell membrane
2 The diagram below represents a person cooking eggs on a stove. The person has touched the hot frying pan and pulled his hand away.
(Not drawn to scale)
Which title is the best one for this diagram? (1) A Human Requires Oxygen to Survive (3) All Living Things Require Energy (2) Metabolism is Influenced by Diet (4) A Human Responds to a Stimulus Base your answers to questions 3 and 4 on the diagram below and on your knowledge of science. The diagram represents a person pushing a 50-kg box up a ramp.
3 Which two simple machines are being used in the diagram? (1) inclined plane; pulley (2) inclined plane; wheel and axle (3) lever; pulley (4) lever; wheel and axle
4 Which force will decrease if the surface of the ramp is made smoother? (1) gravity (2) magnetism (3) friction (4) electricity
5 The sequence of diagrams 1, 2, and 3 below represents different levers being used to lift a 100-newton (N) weight. The distance in meters (m) from the fulcrum to the applied force is different in each diagram.
How many meters from the fulcrum to the applied force would allow this weight to be lifted using only 10 N of applied force? (1) 20 (2) 10 (3) 8 (4) 4
Base your answers to questions 6 through 8 on the information below and on your knowledge of science. The diagram below represents a student using a spring scale to pull a toy cart across a level table. The student pulled the cart across the table five times. Each time, the student used more force. Force is measured in newtons (N) on the spring scale. The student then calculated the acceleration of the cart, measured in meters per second squared (m/s2). The results are shown in the data table.
6 Determine the mass of the cart, using the equation below. [1]
Force (newton) = mass (kg) x acceleration (m/s2) Mass of cart = ______kg 7 Based on the data in the table, construct a line graph on the grid below. Use an X to plot the acceleration of the cart for each force shown. Connect the Xs with a solid line. [ 8. Based on the graph, predict the acceleration of the cart if the student were to perform the same experiment again using 2 N of force. [1] m/s2
9 The diagram below represents part of a science classroom. Several items are labeled.
Choose two labeled items from the diagram and explain how each is used to keep students safe. [1]
Item 1:
Explanation:
Item 2: Explanation: Base your answers to questions 10 through 12 on the diagram below and on your knowledge of science. The diagram represents some processes that are part of the water cycle. Arrow X represents a water cycle process
10 What is the source of energy for the water cycle? [1]
11 Which process changes the water vapor into water droplets that form the cloud? [1]
12 Which process in the water cycle is represented by arrow X, where water flows over land to the ocean? [1]
13 The diagram below represents two people using a board and a log as a simple machine to lift a large rock. Rock
Board
Log
What force must the people overcome in order to lift the rock? [1] 14 Diagram A below represents a solid metal rod before heating. Diagram B represents the same rod after heating for 5 minutes. The diameter of the rod is noted in both diagrams.
Explain why the diameter of the metal rod changed slightly when the rod was heated. [1]
TABLES/CHARTS Base your answers to questions 1 through 3 on the chart below and on your knowledge of science. The chart shows the levels of classification for five different organisms.
Levels of Classification for Five Organisms
Organism
Level of Domestic Orange Day E. coli White Button Wolf Classification Dog Lily Bacteria Mushroom Spider Kingdom Animalia Plantae Monera Fungi Animalia Phylum Chordata Magnoliophyta Proteobacteria Basidiomycota Arthropoda Gamma Class Mammalia Liliopsida Proteobacteria Agaricomycetes Arachnida Order Carnivora Liliales Enterobacteriales Agaricales Araneae Family Canidae Liliaceae Enterobacteriaceae Agaricaceae Lycosidae Genus Canis Hemerocallis Escherichia Agaricus Pardosa Species familiaris fulva coli bisporus atlantica
1 Identify the most general level of classification shown for the E. coli bacteria. [1] 2 Identify the two organisms in the chart most closely related by level of classification. [1]
and ______
3 Identify one organism in the chart that is a decomposer. [1]
GRAPHS 1Which graph shows what most likely would happen to the population of a certain animal if a new predator were introduced at time A?
2 The graph below shows population data for one kind of insect over a 50-year period.
Which statement best describes the population of this insect over the 50-year period? (1) It decreased steadily (2) It increased steadily (3) It remained constant (4) It followed a cyclic pattern Base your answers to questions 3 and 4 on the information below and on your knowledge of science.
The graph below shows the average monthly air temperatures in a one-year period for two cities: Beijing, China and Valdivia, Chile.
3 Determine the two months in which these two cities had the same average monthly air temperature. [1]
and ______
4 Identify the scientific instrument used to measure air temperature. [1] FLOWCHARTS Base your answers to questions 1 and 2 on the food web below and on your knowledge of science.
1 Identify one producer labeled in this food web. [1]
2 Explain why the frog population would most likely decrease if there were a decrease in the cricket population. [1] Base your answers to questions 3 and 4 on the partial food web below and on your knowledge of science.
3 These organisms can be classified according to the way they obtain energy. Complete the chart below by identifying one example of each type of organism labeled in this food web. [1]
Type of Organism Example in Food Web
carnivore
herbivore
producer
4 Explain why the population of rabbits might decrease if the population of mice decreased. [1] 5 The diagram below represents two gases being cycled through an ecosystem. Letter X represents one of those gases.
Identify the gas represented by X. [ MAPS 1 The map below shows the center of a low-pressure system (L) over the United States and the fronts associated with the low-pressure system.
Identify one weather condition likely to occur along the fronts of this low-pressure system. [1]
2 The map below shows the location of a nature preserve and the surrounding area. The preserve is an ecosystem that is home to several endangered species.
Based on the map, describe one human activity that could have a negative effect on the nature preserve. [1] Base your answers to questions 3 and 4 on the map below and on your knowledge of science. The Xs on the map show the location of the center of Hurricane Betsy over the Atlantic Ocean at noon on several dates in 1965.
3 In which compass direction did Hurricane Betsy move between September 1 and September 4? [1]
4 Determine the latitude and longitude position of the center of Hurricane Betsy at noon on September 3. [1]
° N ° W