Chapter 1 & 2 Test

For her science project, a student collects data on deer spotted in a field each day. For the first five ays of her study, she counted 23. 16, 18, 27, and 19 deer. What type of observation do thee data represent?

• inferred observation
• qualitative observation
• classified observation
• quantitative observation

Explaining or interpreting the things you observe based on reasoning from what you already know is called

• observing
• inferring
• predicting
• classifying

Which is an example of using ethics in experiments?

• making sure other scientists can repeat the experiment
• taking care that no animals are harmed
• storing samples under controlled conditions
• making sure that only useful data are collected

One variable that is purposely changed to prove a hypothesis is the ____________________ variable

• independent
• subjective
• dependent
• objective

Tags

NGSS.MS-PS2-2

Observations that deal with descriptions that cannot be expressed in numbers are called

• relative observations
• quantitative observations
• qualitative observations
• evidence observations

Trying to explain why a solar eclipse occurs is an example of

• a prediction
• an experiment
• scientific inquiry
• classification

Tags

NGSS.MS-ESS1-1

The metric system is based on what number?

• 12
• 100
• 10
• 1

In science, a fact is

• not testable
• the same as a variable
• a strong hypothesis
• a confirmed observation

Which of the following would you measure using a meter stick?

• volume
• mass
• length
• themperature

You measure the length of a string three times and get values of 34.0 cm, 34.1 cm, and 34.2 cm. The actual length is 39.0 cm. What can you say about your measurements?

• They are accurate but not precise
• They are precise but not accurate
• They are both accurate and precise
• They are neither accurate and precise