Understanding Midterm 1- Lab Equipment and Science Concepts

In a laboratory setting, why would you choose to use a beaker over a graduated cylinder?

• To measure specific volumes accurately

• For bulk movements and mixing of liquids

• To measure small volumes like 1mL or drops

• To observe the meniscus clearly

How do you read the meniscus when measuring liquid in a graduated cylinder?

• From the top of the curve

• From the bottom of the curve

• From the side of the cylinder

• From the middle of the curve

What is the primary reason for using a pipette in a laboratory experiment?

• To measure large volumes of liquid

• To measure specific volume measurements

• To measure 1mL or drops accurately

• To mix chemicals

Which of the following best describes a positive correlation between two variables?

• As one variable increases, the other decreases

• Both variables increase or decrease together

• One variable remains constant while the other changes

• Both variables change independently

Tags

NGSS.HS-LS4-3

What is a key feature of good, reliable science that ensures trustworthy results?

• Small sample size

• Large sample size and control groups

• Testing multiple independent variables at once

• Bias in data collection

Why is a control group important in scientific experiments?

• It is the group that receives the experimental treatment

• It serves as a comparison to ensure the independent variable has an impact

• It is used to introduce bias

• It is not necessary for reliable results

Identify an example of an error that could occur in a scientific experiment.

• Large sample size

• Repeated experiments with consistent results

• Small sample size and bias

• Testing only one independent variable

In the experiment "How chewing gum affects memory on tests," what is the independent variable?

• Memory on tests

• Chewing gum

• The type of test

• The time of day

Which characteristic is not part of the MR GGRECH criteria for living things?

• Metabolism

• Respiration

• Photosynthesis

• Homeostasis

Tags

NGSS.MS-LS1-6

What is the role of metabolism in living organisms?

• To maintain a stable internal environment

• To reproduce and grow

• To carry out reactions that require or release energy

• To evolve over time

Tags

NGSS.MS-LS1-7