Science 10.docx

BREAKTHROUGH CHRISTIAN ACADEMY 9006 Eagle St., Are 3, Sitio Veterans, Brgy. Bagong Silangan, Quezon City GRADE 10 SCIENCE MONTHLY EXAMINATIONS NAME: ____________________________________________________ TEACHER: ____________________________________________________

SCORE: _____________ DATE: _____________

TEST I. DIRECTION: Identify the letter of the correct answer. _____ 1. What skill is a scientist using when she listens to the sounds that whales makes? a. Drawing conclusions b. Making hypothesis

c. making observations d. interpreting data

_____ 2. What is the correct order of the steps in the scientific method? a. Ask questions, make a hypothesis, test the hypothesis, analyze results, draw conclusions, and communicate results. b. Ask a question, analyze results, make a hypothesis, test the hypothesis, draw conclusions, and communicate results. c. Ask a question, make a hypothesis, test hypothesis, draw conclusions, analyze results, and communicate results. d. Make a hypothesis, test the hypothesis, analyze the results, ask a question, draw conclusions, and communicate results. _____ 3. Which question would be the best high level scientific question? a. b. c. d.

How long ago did dinosaurs live on the Earth? How many giraffes live in Africa? Does the amount of salt in water affect the temperature at which it boils? Who made the first microscope?

_____ 4. Which of the following is NOT a rule when writing a hypothesis? a. it should restate the question b. It is an if/then statement

c. It is testable d. It is a prediction

_____ 5. An experiment that tests only one factor at a time by using a comparison of a control group and an experimental group is? a. a controlled experiment b. an independent variable

c. a theory d. a dependent variable

_____ 6. The process of obtaining information by using the senses is called a/an a. observation b. Scientific method

c. conclusion d. inquiry

_____ 7. A series of steps designed to help you solve problems and answer questions a. Experiment b. Observation

c. scientific method d. hypothesis

_____ 8. In an experiment, the one variable that is changed is called the a. dependent variable b. controlled variable

c. experimental variable d. independent variable

_____ 9. In an experiment, the factor that we measure is called the a. dependent variable b. independent variable

c. conclusion d. controlled variable

_____ 10. A scientist hypothesizes the temperature at which an alligator's egg is incubated will determine whether the alligator will be male or female. The independent variable is a. the temperature b. the gender of the alligator

c. the incubator d. the male alligators

_____ 11. A scientist hypothesizes the the temperature at which an alligator's egg is incubated will determine whether the alligator will be male or female. The dependent variable is a. the size of the baby alligators b. the incubator

c. the gender of the baby alligators d. the temperature

_____ 12. A scientist conducted an experiment to determine how the amount of salt in a body of water affects the number of plants that can live in the water. In this experiment the independent variable is a. the water b. the amount of salt in the water

c. the temperature of the water d. the number of plants in the water

_____ 13. A scientist conducted an experiment to determine how the amount of salt in a body of water affects the number of plants that can live in the water. In this experiment the dependent variable is a. the amount of salt in the water b. the temperature of the water

c. the number of plants in the water d. the water

_____ 14. All the things in an experiment that must be the same to make it fair are called a. controlled experiments b. dependent variables

c. controlled variables or constants d. independent variables

_____ 15. In science, an educated guess is called a/an a. conclusion

b. observation c. question

d. hypothesis

_____ 16. When you decide whether or not the data supports the original hypothesis, you are a. making observations b. forming a hypothesis

c. asking questions d. drawing conclusions

_____ 17. In which step of the scientific method do we want to use graphs a. asking questions b. make a hypothesis

c. analyze data d. communicate results

_____ 18. A scientist who wants to study the effects of fertilizer on plants sets up an experiment. Plant A gets no fertilizer, Plant B gets 5 mg. of fertilizer each day, and Plant C gets 10mg. of fertilizer each day. Which plant is the control group? a. Plant C

b. Plant A

c. Plant B

d. All of them

_____ 19.A scientific procedure undertaken to make a discovery, test a hypothesis, or demonstrate a known fact is a/an: a. Law

b. experiment c. hypothesis

d. theory

_____ 20. If you were measuring the mass of a fly, you should use a. Liters

b. meters

c. kilograms

d. grams

_____ 21. Students in a science class placed ice cubes in a cup. They were studying variables that affected how long it takes the ice to melt. Select the variable that would most likely NOT affect the time it takes the ice to melt. a. b.

Temperature of the room Size of ice cube

c. size of cup d. number of students

Questions 22 - 26 refer to the following situation. Sarah wanted to find out if temperature has an effect on the growth of bread mold. She grew the mold in nine Petri dishes containing the same amount and type of nutrients. Three were kept at 0 C, three were kept at 90 C, and three were kept at room temperature, 27 C. The containers were examined and the growth of the bread mold was recorded each Friday for five weeks.

_____ 22. Which of the following is her hypothesis? a. b. c. d.

If the amount of nutrients is changed, then the amount of bread mold will change. If the temperature changes then the amount of bread mold will change. If the number of containers change, then the amount of bread mold will change. If there are different types of nutrient used, then that will cause differences in the amount of bread mold.

_____ 23. One of the controlled variable is: a. b.

Temperature of the bread mold Amount of bread mold

c. type of container used d. temperature of containers

_____ 24. The dependent or responding variable is a. b. c. d.

number of containers at each temperature growth of bread mold amount of nutrients temperature of the containers

_____ 25. The independent or manipulated variable is: a. b. c. d.

number of containers at each temperature amount of nutrients in each container temperature of the containers growth of bread mold

_____ 26. Which of the following would NOT be a suitable way to measure growth of bread mold in this experiment? a. b. c. d.

the diameter of the bread mold spots the color of the bread mold spots the number of spots of bread mold the size of the bread mold spots

_____ 27. Some chickens lay an egg every day. Other chickens produce few eggs. A study is planned to examine factors that might affect the number of eggs produced by chickens. Which of the following is NOT a suitable hypothesis for the study? a. b. c. d.

If more eggs are produced by chickens, then they lose more weight If the cage for chickens is larger, then they will produce more eggs. If there is more protein in the feed, then more eggs are produced. If chickens receive more hours of light, then they will produce more eggs.

Questions 28 - 30 refer to the experiment pictured below:

_____ 28. What is the independent variable in the above experiment? a. b. c. d.

The intensity or brightness of the light Amount of time given light The amount of water received weekly the color of the light

_____ 29. In the above experiment, all of the following variables must be held constant EXCEPT a. b. c. d.

the wavelength or color of the light the amount of water received weekly the temperature of the room amount of time given light

_____ 30. If a scientist is measuring the "growth of the plants" in the above experiment, which of the following would NOT be a good operational definition for the "growth of the plants"? a. the number of leaves produced by each plant b. the weight of the plant in its pot of dirt c. the color and the general appearance of the plants d. the height of the plants

II. DIRECTION: Write TRUE if the underlined word is correct according to the parts and description of scientific research report, and if it’s not write the correct word to make the statement correct. _______________ 1. Experiment is the blueprint of the procedures that enable the researcher to test hypothesis by reaching valid conclusion _______________ 2.Randomized complete block design is used to ensure that the heterogeneous samples will be equally distributed to each block. _______________ 3. Bibliography contains all the sources of information considered in the study. _______________ 4. Results section presents the statements tat answer all the research questions raised at the beginning of the study. _______________ 5. Title is written at the center of the page and in upper and lower case _______________ 6. Results section contains the interpretation of data _______________ 7. Abstract section is the start of the research report _______________ 8. Methods section contains the information on how the study is done _______________ 9. Abstract is the concise summary of the content of the research. _______________ 10. Discussion contains information on how the study is done III. DIRECTION: Paraphrase the following passages (5 points) Original Passage The honeybee colony, which usually has a population of 30,00 to 40,000 workers, differs from that of the bumblebee and many other social bees or wasps in that it survives the winter. This means that the bees must stay warm despite the cold. Like other bees, the isolated honeybee cannot fly if the temperature falls below 10 degrees C (50 degrees F) and cannot walk if the temperature is below 7 degrees C (45 degrees F). Within the wintering hive, bees maintain their temperature by clustering together in a dense ball; the lower the temperature, the denser the cluster. The clustered bees produce heat by constant muscular movements of their wings, legs, and abdomens. In very cold weather, the bees on the outside of the cluster keep moving toward the center, while those in the core of the cluster move to the colder outside periphery. The entire cluster moves slowly about on the combs, eating the stored honey from the combs as it moves. “Winter Organization,” in Helena Curtis, Biology, second edition, (New York: Worth, 1976), 822-823. _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________

The original passage: Students frequently overuse direct quotation in taking notes, and as a result they overuse quotations in the final [research] paper. Probably only about 10% of your final manuscript should appear as directly quoted matter. Therefore, you should strive to limit the amount of exact transcribing of source materials while taking notes. Lester, James D. Writing Research Papers. 2nd ed. (1976): 46-47. _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________