7th Grade 1st Checkpoint REVIEW

While observing a plant in your classroom, you notice that the leaves are turning yellow and wilting. Based on this observation, what is a scientific question that investigates what might be causing this change in the plant?

• How tall will the plant grow if it gets more sunlight?

• What is the ideal temperature for plant growth?

• How does the amount of water the plant receives affect the color and health of its leaves?

• How long will it take for the plant to flower?

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

In Miss Boyer's classroom, an experiment is set up as follows: Materials: •1 Smartphone with sensor app utilizing a decibel meter •1 Speaker •1 tone generator •Metric measuring tape •3 marked locations of various distances around the classroom Which piece of safety equipment should be added to this list for this experiment?

• Goggles

• Hearing protection

• Face shield

• Gloves

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

When conducting an experiment that involves handling harmful chemicals or biological materials, what protective equipment should you wear to protect your hands?

• Safety Goggles

• Gloves

• Lab Coat

• Face mask

What is the correct order of steps to safely clean up after a chemical spill?

• Notify the teacher immediately, put on gloves, clean up the spill, and the teacher will dispose of the waste in the biohazardous container.

• Put on gloves, clean up the spill yourself, and throw the waste into the trash can.

• Clean up the spill without telling anyone, and wash your hands when done.

• Throw the spill into the regular trash can and wash your hands.

Maria wants to measure the volume of a liquid. Which tool would be most appropriate for this task?

• Spring Scale

• Beaker

• Metric Ruler

• Graduated Cylinder

Jerry wants to take a closer look at the mold growth on a slice of bread during his experiment. Which tools could assist him best with this task? Select TWO correct answers.

• Scale

• Beaker

• Microscope

• PH Indicator

• Hand Lense

Which tool would be most useful in an investigation testing the effects of slope angle on the speed of an object? Select TWO correct answers.

• Metric Ruler

• Spring-Scale

• Balance

• Petri Dish

• Timer

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-1

Sam sets up an investigation to test the boiling temperatures of different substances. She places 10 milliliters of water in beaker A, 12 milliliters of honey in beaker B, and 8 milliliters of vinegar in beaker C. All three beakers are made of glass. All three Bunsen Burners are set to the highest setting. What is the problem with Lilly's investigation?

• The beakers need to be made of plastic.

• The beakers should contain the same amount of each liquid.

• The Bunsen Burners should all be set to medium.

• Nothing. Her setup is perfect.

Tags

NGSS.MS-PS3-4

Jill is making a prediction before an experiment. Her science notebook reads: "If a person is exposed to more sunlight daily, their self-rated level of happiness will be higher than if they received less amounts of sunlight." Which is this an example of?

• Fact

• Hypothesis

• Scientific Law

• Scientific Theory

Which of the following best describes a scientific theory?

• A guess about what might happen in an experiment

• A well-tested explanation for a natural phenomenon

• A rule that always applies in a specific situation

• A table of data from an investigation