The Practice of Science

Why do scientists write the results of their investigation in science journals?

• They want others to support their opinions.

• To communicate and share their findings so that others can do the same investigation and get similar results.

• It is required for being a scientist.

• To show others what they are doing wrong.

Tags

NGSS.MS-LS2-4

Which is an opinion?

• Purple is the best color for parrot fish.

• The boiling point of water is 100ºC.

• Bats us sonar to fly at night.

• The ball rolled 10.2 feet over four tries.

For what can scientists use the data in the graph?

• conclusion

• investigation

• evidence

• opinion

Tags

NGSS.MS-PS3-1

Scientists conduct different kinds of investigations. Which of the following describes why Hannah's investigation was NOT an experiment?

• Hannah did not collect and record data.

• Hannah did not conduct a controlled test.

• Hannah did not show her information in a graph.

• Hannah observed only three different weather features.

Which statement is an opinion and NOT scientifically testable?

• Giraffes grow taller than zebras.

• Venus is the second planet from the sun.

• Water on Earth occurs as a solid, liquid, or gas.

• Computers never really help people.

Which kind of information helps you answer a scientific question, or problem statement, asked before an experiment?

• opinion

• prediction

• evidence

• explanation

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-4

Ricardo is doing an experiment to find out which M&M color dissolves the fastest. Which statement best explains why he should record the steps of his experiment and his observations?

• So that he can make a graph with his data

• so that he can move on to another experiment

• so that others can repeat his experiment and get similar results

• so that others cannot claim they did the same experiment

Michelle conducted an experiment to find out how temperature affects humidity. She repeated her experiment four times. Which of the following is most likely the purpose of repeating her experiment?

• to wait for better weather conditions

• to see if she gets similar results each time

• to change the data collected

• to match her original hypothesis

Luisa is conducting an investigation about trees. She will use a meter stick to measure the length of the trees. Which of the following best describes why Luisa should write down her measurements in a data table as part of this investigation?

• to help her use a meter stick

• to help her control variables

• to help her organize her data

• to help her plan the steps to follow

Jada conducted a research about beavers. She concluded that beavers can be destructive. Which of the following statements provides evidence to support Jada's conclusion?

• The beaver is the largest rodent in North America.

• A group of beavers can cut down many trees in a single night.

• Beavers communicate with one another by slapping their tails on the water.

• Centuries ago, tens of thousands of beavers were hunted for their fur.