Day 2- Scientific Method

The passage below describes some of the steps of the scientific method. Select the part of the passage that describes developing the hypothesis.

Hint: To develop the hypothesis, you use prior knowledge to propose a possible explanation and to make a prediction that can be tested.

• She noticed that some of the boats were V-shaped, and other boats seemed to have flat bottoms.

• She speculated that the shape of the boat bottom might affect how much weight the boat could hold, so that flat-bottomed boats would hold more weight.

• So, she decided to make several aluminum foil boats to float in the bathtub.

• She made ten boats with flat bottoms and ten boats with V-shaped bottoms, and then she kept track of the number of pennies it took to sink each boat in the water.

The passage below describes some of the steps of the scientific method. Select the part of the passage that describes testing the hypothesis.

Hint: To test the hypothesis, you make a series of observations or design and carry out an experiment that will support or reject the hypothesis

• Dwayne's manager wanted to know if they were using more bleach than was needed to remove stains from the tablecloths.

• Dwayne usually washed each load of tablecloths with one cup of bleach.

• He thought that he could reduce the amount of bleach, but he expected that decreasing it by more than 25 percent would make the bleach less effective.

• So, he counted the tablecloths with stains left after washing five loads of tablecloths with one cup of bleach, five loads with 3/4 of a cup of bleach, and five loads with 1/2 of a cup of bleach.

The passage below describes some of the steps of the scientific method. Select the part of the passage that describes developing the hypothesis. Hint: To develop the hypothesis, you use prior knowledge to propose a possible explanation and to make a prediction that can be tested.

• Austin read in a book that earthworms in the soil have helped parsley plants grow.

• This made Austin consider whether his basil plants were not growing many leaves because their soil lacked earthworms, and that his plants would grow more leaves if he added earthworms.

• Austin added earthworms to the soil in five of his ten pots, and then he counted the number of leaves on all 10 plants after two months of growth.

• Austin grew basil plants in ten pots on his back porch.

The passage below describes some of the steps of the scientific method. Select the part of the passage that describes identifying the question. Hint: To identify the question, you pose a question that focuses on a problem.

• Vivian was playing an apple bobbing game at a party.

• During the game, she began to wonder if a fruit's size is related to whether it floats or sinks.

• She speculated that smaller fruits would float but larger fruits would sinks.

• Since both the smallest and the largest fruits floated, she deduced that size alone does not determine if fruit floats.

The passage below describes some of the steps of the scientific method. Select the part of the passage that describes drawing a conclusion.

Hint: To draw a conclusion, you decide if the results support the hypothesis.

• This led him to wonder if soil pH could affect the color of hydrangea flowers.

• Spencer filled five pots with soil with a pH of 5.0 and another five pots with soil with a pH of 6.5.

• Because the plants grown in pH 6.5 soil bloomed pink, while those grown in pH 5.0 soil bloomed blue he deduced that soil pH influences hydrangea flower color.

• He shard his results on his favorite gardening blog.

The passage below describes some of the steps of the scientific method. Select the part of the passage that describes revising the hypothesis.

Hint: To revise the hypothesis, you use the results of the investigation to come up with a new explanation and to make new predictions.

• Amy thought that temperature might affect mold growth and that less mold would grow on bread stored in cold conditions.

• For two weeks, Amy stored half of her bread in dark bins and the other half in clear bins.

• She found that the same amount of mold grew on bread in both types of bins

• Based on her experiment, Amy determined that light did not have a major affect on the total amount of mold that grew on her bread.

The passage below describes some of the steps of the scientific method. Select the part of the passage that describes communicating the findings.

Hint: To communicate findings, you tell others about your investigation.

• She knew that a more aerodynamic rocket would reach a higher altitude.

• During the demonstration, she showed museum guests a poster that explained her experiment and included her graph.

• She calculated the average peak altitude for each type of rocket and made a graph to see if pointed-nose rockets went higher.

• Her results showed that, to her surprise, the rounded-nose rockets actually went higher than the pointed-nose rockets.

The passage below describes some of the steps of the scientific method. Select the part of the passage that describes revising the hypothesis.

Hint: To revise the hypothesis, you use the results of the investigation to come up with a new explanation and to make new

predictions.

• He decided that sand did not speed up melting, since the two types of ice cubes were similar weights.

• Then, he read that salt makes ice melt at a cooler temperature.

• He predicted that because the melting temperature would be lowered, ice cubes would melt faster if he applied salt to them.

The passage below describes some of the steps of the

scientific method. Select the part of the passage that

describes analyzing the data.

Hint: To analyze the data, you examine the data and look

for patterns that support the hypothesis

• The team members wondered if the air pressure in the basketballs would affect bounciness.

• The team members inflated ten basketballs to different pressures and dropped each ball three times from a ladder.

• Then, they made a graph to see if the basketballs inflated to a higher pressure bounced higher.

• From the graph, they concluded that the basketballs with a higher pressure were bouncier.

The passage below describes some of the steps of the scientific method. Select the part of the passage that describes communicating the findings

• Katy wanted to know if the distance traveled was related to its mass.

• She used a ball launcher to launch each ball three times, using the same force with all the balls, and then she examined her results.

• She deduced that there was a relationship between ball mass and distance traveled: the lighter a ball was, the farther it traveled.

• She shared a description of her tests and a graph of her results with her friends at the dog park.