Testing Skills

Sadie is testing how the age of a seed affects how fast plants grow. Look at the picture to see if you can figure out what makes her experiment unfair. Mark all that apply.

• She used different types of seeds/plants.

• The plants are in different pots.

• She did not plant very many plants.

• Seed age might not make a difference.

Tags

NGSS.MS-LS1-5

Which of the following is a testable hypothesis?

• Roses are more beautiful than violets

• A plant needs at least five hours of sunlight per day to grow

• Ice cream is delicious

• Humans will someday land on Mars

Tags

NGSS.MS-PS3-5

Which of the following is a testable hypothesis?

• Roses are more beautiful than violets

• A plant needs at least five hours of sunlight per day to grow

• Ice cream is delicious

• Humans will someday land on Mars

What is the primary purpose of a control group in a scientific experiment?

• To provide a standard for comparison

• To ensure the experiment is valid

• To increase the sample size

• To test multiple variables at once

Which of the following statements is a scientific theory?

• Gravity causes objects to fall

• The Earth is flat

• All swans are white

• Water boils at 100°C

In an experiment, what is the independent variable?

• The variable that is changed or controlled

• The variable that is measured

• The variable that remains constant

• The variable that is dependent on others

Tags

NGSS.MS-PS2-2

Which of the following is an example of qualitative data?

• The temperature is 25°C

• The solution turned blue

• The mass is 50 grams

• The length is 10 meters

What is the role of a hypothesis in scientific research?

• To provide a definitive answer

• To offer a testable explanation

• To summarize previous research

• To prove a theory

Which of the following is a characteristic of a good scientific experiment?

• It has multiple variables changing at once

• It is repeatable and reproducible

• It proves the hypothesis

• It is conducted in a laboratory

What does a pH of 7 indicate about a solution?

• It is acidic

• It is basic

• It is neutral

• It is alkaline