TITLE Which Liquid Evaporates The Fastest标题中的液体蒸发最快

1、.TITLE: The Stroop Interference Effect and GenderI. QUESTION: Will there be a difference between males and females when testing color recognition times and word reading times using the Stroop interference effect? II. MATERIALS:10 male subjects, 10 female subjects, 1 stopwatch, 1 notebook to record r

2、esults, 1 pen, 34- 3"X5" index cards, 1 purple marker, 1 green marker, 1 red marker, 1 orange marker, 1 yellow marker, 1 blue marker, 1 black marker, 1 calculatorIII. PROCEDURE:STEP 1. Count out two separate sets of 17 cards. Take one set of cards and use the black marker to write the name

3、s of the following colors on 16 of the cards. Write one word on each of the 16 cards. Write the following words: red, yellow, blue, orange, green, purple, red, yellow, blue, yellow, blue, red, green, purple, orange and green. The extra card is a cover card. This is the control set of cards.STEP 2. U

4、sing the second set of 17 cards and the six different colored markers (purple, green, red, orange, yellow, and blue), prepare the second set of cards. Write a color word on each card according to this list. The other card will be a cover card. WORD MARKER COLOR red yellow ye

5、llow blue blue red orange green green purple purple orange red green yellow purple blue orange yellow red blue yellow red blue green orange purple green orange purpl

6、e green redSTEP 3: Each set of cards is read separately. Have each subject read the set of black and white cards first. Use the cover card to prevent the subject from starting too soon. Tell the subject when to begin reading the cards and time with a stopwatch. They must correct any mistak

7、es that are made in reading. Stop the stopwatch when they have finished reading the set of cards and record the results. Do not allow the subject to repeat the test because the subject can learn to read the cards faster with practice. This skill can be learned.STEP 4: Then use the colored set of car

8、ds for recognition of the color of the word written on the cards. The subject must state the color of the marker not the word written on the card. Use the cover card to prevent the subject from starting too soon. Tell the subject when to begin reading the cards and time with a stopwatch. They must c

9、orrect any mistakes that are made in reading. Stop the stopwatch when they have finished reading the set of cards and record the results. Do not allow the subject to repeat the test because the subject can learn to read the cards faster with practice. This skill can be learned.STEP 5: Have the subje

10、ct read the colored set of cards for the word written on the cards. The subject must read the cards as quickly as possible. Use the cover card to prevent the subject from starting too soon. Tell the subject when to begin reading the cards and time with a stopwatch. They must correct any mistakes tha

11、t are made in reading. Stop the stopwatch when they have finished reading the set of cards and record the results. Do not allow the subject to repeat the test because the subject can learn to read the cards faster with practice. This skill can be learned.STEP 6. Separate the reading results into mal

12、e and female categories. Average the results of each test for males and females. Then compare the results to determine whether males or females performed each test most efficiently.STEP 7: Graph the data and write your hypothesis.-TITLE: Which Liquid Evaporates The Fastest?I. QUESTION: Do liquids ev

13、aporate at different rates?II. MATERIALS: six clear plastic cups, Sprite, milk, orange juice, rubbing alcohol, and water.III. PROCEDURE:STEP 1: Place each of the six liquids into separate 300 mL plastic containers. STEP 2: Put 200 mL of each liquid into the containers. STEP 3: Put them in the same p

14、lace. STEP 4: Check the volume of each liquid each day, and record the data.STEP 5: Graph the data and write a conclusion. -Title: Preventing Apple OxidationI. QUESTION: What is the best way to prevent cut apple slices from turning brown?II. MATERIALS: lemon juice, vinegar, water, Sprite, and Milk,

15、cut apples, plastic cups.III. PROCEDURE:STEP 1: Cut apples into 10 slices.STEP 2: Place one slice in each of 10 cups.STEP 3: Label 2 cups vinegar, 2 lemon juice, 2 water, 2 Sprite, and 2 MilkSTEP 4: Place 200 ml of each liquid on the apple slices in the cups.STEP 5: Leave the apples in the liquid fo

16、r 1 minute and remove.STEP 6: Place the slices on pieces of paper towel labeled with the name of the liquid.STEP 7: Check apples every 15 minutes, for one hour, STEP 8: Photograph each cup and record your results.STEP 9: Write your conclusion.-TITLE: Temperature and Floating Objects?I. QUESTION: Doe

17、s the temperature of water affect the buoyancy of a floating object?II. MATERIALS: 3 plastic bowls which hold 2 liters of water each, microwave, freezer, 3 plastic lids from margarine containers (all the same size)III. PROCEDURE: STEP 1: Heat 1 liter of water in the microwave for 5 minutes and pour

18、into a plastic bowl.STEP 2: Pour one liter of cold tap water into a second bowl.STEP 3: Pour one liter of water that has been in the freezer for one hour into the third container.STEP 4: Take the temperature of the water in all three containers and record it.STEP 5: Place a margarine lid in each con

19、tainer at the same time.STEP 6: Add pennies to the discs, one at a time, until the discs sink, and record the number of pennies needed to sink each lid.STEP 7: Repeat the process two more times, Recording the waters temperature before each trial.STEP 8: Graph your data and write a conclusion-TITLE:

20、The Effect Of Gender On The Amount Of Time It Takes A Mouse To Get Through A Maze.I. QUESTION: Does the gender of a mouse affect how long it takes to go through a maze?II. MATERIALS: a maze, 3 female mice and 3 male mice, rodent food.III. PROCEDURES:STEP 1: Put some rodent food at the end of the maz

21、e. Then put a female mouse in the maze and let it try to get to the end. STEP 2: Time how long it takes the mouse to get to the end of the maze and record it. STEP 3: Repeat steps 1 and 2 with the rest of the female mice and then the male mice. STEP 4: Continue running mice through the maze until ev

22、ery mouse has had 3 turns.STEP 5: Average the times for all of the female mice and all of the male mice.STEP 6: Graph the data, compare the results and write a conclusion.-TITLE: Tasting The Difference Between Regular and Fat Free FoodsI. QUESTION: Can people really taste the difference between fat

23、free and regular foods?II. MATERIALS: bread, regular mayonnaise, fat free mayonnaise, fat free ice cream, regular ice cream, fat free ranch dressing, regular ranch dressing, plastic spoons, plastic knives, carrotsIII. PROCEDURE:STEP 1: Select 20 people to participate in the test.STEP 2: Place fat fr

24、ee ice cream, mayo, and dressing in plain containers. Put a red dot on the fat free foods and a blue dot on the foods with fat. STEP 3: Have each subject taste each of the foods and tell you if they think they are fat free or regular. Record their responses. (When feeding mayonnaise, put it on a sma

25、ll piece of bread. When feeding dressing, have people dip a carrot into it.)STEP 4: After all 20 people have completed the taste test, Graph the number of correct and incorrect responses and write your conclusion.-TITLE: Growth of Carrot TopsI. QUESTION: In what medium will carrot tops grow the best

26、, soil, sand, gravel or water?II. MATERIALS: 40 carrot tops, potting soil, sand, gravel, water, clear plastic cupsIII. PROCEDURE:STEP 1: Plant 10 carrot tops in each substance and water them every three days with 30 ml of water. Add water to the carrot tops growing in plain water if the water gets l

27、ow. You just want to maintain the water level. STEP 2: Measure the growth of the roots every three days before watering the plants.STEP 3: Continue to measure, photograph and record data for at least 3 weeks.STEP4: Graph the data and write your conclusion.-TITLE: The Effect of High Protein Food on t

28、he Weight of MiceI. QUESTION: What affect will high protein food have on a mouse's weight? II. MATERIALS: Kitten chow with the highest protein, regular mouse food.III. PROCEDURES:STEP 1: Take 10 mice and divide them into two groups and place them into two different containers.STEP 2: Weigh all o

29、f the mice in the control group and record their total weight.STEP 3: Weigh all of the mice in the experimental group and record their total weight.STEP 4: Feed the control group regular mouse food. Keep the dishes full all of the time, and make sure they always have water.STEP 5: Feed the experimen

30、tal group high protein kitten chow. Keep the dishes full all of the time, and make sure they always have water.STEP 6: Weigh each group once a week and record the total weight of each group.STEP 7: Continue the experiment for at least 4 weeks.STEP 8: Graph the data and write your conclusion.-TITLE:

31、The Affect of Different Soil Types on Where Night Crawlers Will Choose To LiveI. QUESTION: What type of soil do earthworms prefer?II. MATERIALS: 1 ten gallon aquarium or a large, clear Rubbermaid container,32 night crawlers, sand, potting soil, coffee grounds.III. PROCEDURE:STEP 1: Dump potting soil

32、 in one half of the tank and sand on the other half. STEP 2: Spread the thirty-two night crawlers along the center of the two soils. STEP 3: Sprinkle 1/2 cup of coffee grounds and 1/2 cup of water across the top of the two soils. STEP 4: Every other day, find the night crawlers, and record how many

33、were in each type of soil. STEP 5: Gather data for six days (every other day).STEP 6: Graph your data and write your conclusion.-TITLE: What Substances Prevent Rust On Metal Nails?I. QUESTION: Can nails be coated with a substance to keep them from rusting?II. MATERIALS: vegetable oil, plastic wrap,

34、Vaseline, nail polish, toothpaste, glue, 18 nails, paper towel, markers, water, cookie sheetIII. PROCEDURES:STEP 1: Line a cookie sheet with wet paper towel.STEP 2: Coat each nail with a different substance: nail polish, toothpaste, glue, vegetable oil, and Vaseline. STEP 3: Leave 3 nails uncoated.S

35、TEP 4: Label each nail and lay it on the wet paper towel on the tray.STEP 5: Cover the top of the tray with plastic wrap. STEP 6: Let the nails sit in this humid place for 2 weeks. STEP 7: Pour water around the trays often, so the paper towels do not dry up. STEP 8: Record the amount of rust on each

36、 nail for ten days.STEP 9: Analyze the data and write a conclusion.Title: The Effect Of Different Liquids On TeethI. QUESTION: What affect do common beverages have on teeth?II. MATERIALS: 8 real teeth from a dentist or veterinarian, 8 test tubes, Apple juice, Coke, Mt. Dew, MilkIII. PROCEDURE:STEP 1

37、: Weigh each tooth and record its weight. Also make notes about its color and photograph each one. STEP 2: Place one tooth in each of the 4 test tubes. STEP 3: Put 10 ml of each liquid in the 4 test tubes with the teeth. STEP 4: Use the other 4 test tubes to create a control group. Place a tooth in

38、each one along with 10 ml saliva. STEP 5: Keep all the test tubes at room temperature and watch the teeth for 10 days. STEP 6: After the 10 days remove the teeth from the test tubes and looked at the color and record any changes. STEP 7: Inspect the teeth with a dental instrument called an explorer.

39、 If the instrument sticks in the tooth, the tooth has started to break down. Record the number of teeth that have broken down. STEP 8: Weigh the teeth and record the information.STEP 9: Graph your data and write your conclusion.-Title: The Effect of Different Liquids On Plant GrowthI. QUESTION: How

40、do different liquids affect the growth of plants?II. MATERIAL: water, kool-aid, soapy water, vinegar, Mt. Dew, Dixie cupsIII. PROCEDURE: STEP 1: Plant 15 bean seeds in potting soil.STEP 2: Water 5 seeds with 30 ml of water, 5 seeds with 30 ml kool-aid, 5 seeds with 30 ml soapy water, 5 seeds with 30

41、 ml vinegar and 5 seeds with 30 ml of Mt. Dew.STEP 3: After one week, measure the height of each plant and record the data. Photograph the plants and water them with 30 ml of the appropriate liquid.STEP 4: Continue to check plants once a week for 4 weeks, photographing them and recording their heigh

42、t.STEP 5: Graph your data and write your conclusion.-Title: Which Brand Of Paper Towels Is Most Absorbent?I. QUESTION: Which brand of paper towel absorbs the most liquid?II. MATERIALS: School paper towel, Bounty, Sparkle, Spartan brand paper towel, water, measuring cupIII. PROCEDURE:STEP 1: Take one

43、 equal size sheet of each paper towel and 200 ml of tap water. Then, starting with the School brand paper towel, immerse one sheet into the measuring cup of water for 10 secondsSTEP 2: Remove the paper towel from the measuring cup without wringing it out. STEP 3: Subtract the remaining amount of wat

44、er in the measuring from the original 200 ml of water to determine the amount of absorption. STEP 4: Repeat 2 more times with the School brand towel.STEP 5: Repeat steps 1-4 with the other brands of paper towel.STEP 6: Average the data and graph the results, then write your conclusion.-Title: Which

45、Cheese Molds Faster?I. QUESTION: Do some brands of cheese mold faster than others?II. MATERIALS: Cheddar, American, mozzarella, and swiss cheese, ziplock bagsIII. PROCEDURE:STEP 1: Use a cheese slicer to cut off equal sized pieces of cheese from each type of cheese.STEP 2: Place each piece of cheese

46、 in its own ziplock bag and seal it.STEP 3: Place the slices of cheese in the same place and observe every day.STEP 4: Photograph the cheese daily and record any changes.STEP 5: After all pieces of cheese have thoroughly molded, compare your results and write your conclusion.-TITLE: Water Freezing E

47、xperimentI. QUESTION: Do different types of water freeze at different rates? II. MATERIALS: 4 clear plastic cups, distilled water, tap water, sugar water (1 cup water with 2 tsp sugar), salt water ( 1 cup of water with 2 tsp of salt), and a freezer. II. PROCEDURE:Step 1: Take 4 clear plastic cups an

48、d fill with 1 cup of each kind of water. The tap water will be the control group and the salt water, sugar water and distilled water will be the experimental groups.Step 2: Put all glasses in the same spot of the freezer.Step 3: Record data at 30 minute intervals by checking to see if the water isfr

49、ozen. Step 4: Continue until all water is frozen. Step 5: Analyzed the data and wrote a conclusion.Step 6: Make a chart or graph to summarize the data.-TITLE: A Comparison of Salt and Sugar CrystalsI. QUESTION: Do salt and sugar crystals form into the same shapes?II. MATERIALS: salt, sugar, distille

50、d waterIII. PROCEDURE:Step 1: Put 1 cup of water into a pot and boil it.Step 2: Pour salt into the water until it will no longer dissolve. Stir constantly.Step 3: Let the solution cool, then pour it into a jar.Step 4: Tie a string to a pencil and let the string hang into the jar. Let it sit. Step 5:

51、 Repeat steps 1 through 4 with the sugar. Step 6: Use a magnifying glass to observe the crystals as they grow. Record your daily observations in a journal.Step 7: After the crystals have grown, photograph them and write your conclusion-TITLE: MOLDING OF BREADI. QUESTION: Does temperature affect mold

52、 growth on bread?II. MATERIALS:4 quart size ziplock bags, 4 slices of bread, water, measuring spoon.III. PROCEDURE:STEP 1: Take ziplock bags and put a piece of white bread, from the same loaf, in each one. STEP 2: Add 10ml of water on each piece of bread, and seal the bags.STEP 3: Number the bags from 1 to 4.STEP 4: Place bag #1 in the refrigerator and record the temperature, place bag #2 in a cupboard and record the temperature, p