CSA Review 22-23

Which ecosystems are considered freshwater

• Lakes and Estuaries

• Lakes , Ponds and Rivers

• Rivers, Beaches and Spas

• Lakes only

Titrations are generally performed in a solution. NaOH is a caustic substance, and skin contact should be avoided.

Which safety precaution should be observed when titrating NaOH into a beaker?

• Wear Protective Eye Wear

• Wear Heat – Protective Gloves

• Avoid Open Flames

• Only Work in Groups of 3 or 4

Tags

NGSS.HS-ETS1-3

Before beginning an experiment, the teacher reminds the students how to use the safety equipment shown below.

Which of the following pieces of safety equipment is most likely needed for this lab?

• Helmet

• Goggles

• Heavy Gloves

• Fire Extinguisher

Which of the following safety equipment should be used when making slides of cheek cells to observe under a microscope?

• Goggles

• Gloves

• Apon

• All of the Answer Choices

This part of the experiment serves as a basis of comparison:

• control group

• Independent variable

• dependent variable

• data

A possible explanation to a problem that has not yet been tested. Educated guess.

• data

• theory

• hypothesis

• fact

Tags

NGSS.MS-LS2-4

NGSS.MS-PS1-2

This variable in an experiment is the one being deliberately changed by the scientist.

• dependent variable

• independent variable

• data

• control group

An experiment is performed on plants to see how different liquids affect plant growth. Each plant in the experiment is given a different liquid; water, apple juice, or milk. Each plant has the same amount of soil, sunlight, and listens to the same music. In this investigation, the independent variable is ...

• type of plant

• the amount of sunlight

• the type of music

• the type of liquid

Tags

NGSS.MS-LS1-5

A student wants to test the effects of type of exercise on heart rate. What is the dependent variable?

• time of day exercise occurs

• amount of exercise

• heart rate

• type of exercise

An experiment is performed on plants to see how different liquids affect plant growth. Each plant in the experiment is given a different liquid; water, apple juice, or milk. Each plant has the same amount of soil, sunlight, and listens to the same music. In this investigation, what are the controlled variables?

• type of plant, amount of music, and sunlight

• plant growth

• water, apple juice, milk

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1