Understanding the Environment

How do scientists get to know and understand the environment?

• By taking samples

• By reading books

• By watching documentaries

• By using telescopes

Tags

NGSS.MS-ESS3-3

Which of the following is a factor that can be sampled to understand environmental conditions?

• Soil (nutrients, invertebrates, etc)

• Cloud shapes

• Wind direction

• Noise levels

Tags

NGSS.MS-ESS3-3

NGSS.MS-LS2-4

What does it mean for a sample to be accurate?

• It is free from bias.

• It is close to the actual value.

• It is influenced by personal opinions.

• It is close to other samples.

What does it mean for a sample to be precise?

• It is close to the actual value.

• It is influenced by personal opinions.

• It is close to other samples.

• It is free from bias.

What is bias in data?

• Measurements that are close to the actual value.

• Measurements that are close to each other.

• Measurements influenced by personal opinions or judgments.

• Measurements that are free from errors.

Which of the following is a method of collecting environmental data through sampling?

• Systematic grid

• Linear regression

• Cluster analysis

• Data mining

What is an example of a sampling strategy used in environmental data collection?

• Judgemental

• Hypothesis testing

• Data encryption

• Neural networks

Which sampling strategy involves selecting samples randomly?

• Random

• Stratified

• Sequential

• Convenience

What is a key characteristic of judgmental sampling?

• It is completely random.

• It is based on evidence and judgment.

• It does not contain any bias.

• It is the most accurate method.

What does data validity in judgmental sampling depend on?

• The size of the sample.

• The randomness of the sample.

• The evidence used to make the judgment.

• The time of day the sample is taken.