A- CFES Mid Year Science Prep #1-#10- 2024-25

Mr. Cox is constructing a device that will serve a ball across a net. He wants the device to serve the ball as far as possible. He tests the device ten times and the ball only travels three feet each time. He wants the ball to travel much further. What should she do next?

• Keep the design as it is.

  
  

• Start over with a brand new design.

  
  

• Analyze what part of the device can be improved and redesign that part.

• Test the device a few more times to make sure that the first few times were accurate.

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Which of these is a testable question?

Groups:

(a) Testable

,

(b) NOT Testable

• How long does it take for an apple tree to grow an apple?

  
  

• What makes a plant grow the fastest?

  What makes a plant grow the fastest?

  
  

• Does changing the amount of water affect the growth of a plant?

  
  

• What kinds of food grows mold fastest?

• How hot is the sun?

• Does adding a Mentos to a 2 liter bottle of Diet Coke cause a reaction?

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Match

• Testable question

• There are 3 plants

• The tallest plant was watered most.

• Does changing the amount of light affect plant growth?

• Hypothesis

• Inference

• Observation

• If a plant gets no water, then it will not grow.

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NGSS.MS-LS2-1

NGSS.MS-LS1-5

Amber wanted to test and see which foods would float and which fruits would sink.

She filled bowls with 8 cups of water each.  Then, she chose a carrot, a pineapple, an orange, a tomato and an apple to test. She placed each piece of fruit gently on top of the water one at a time.

Groups:

(a) Independent Variable

,

(b) Dependent Variable

,

(c) Constants

• temperature of water

• amount of water

• type of bowl

• if they floated or sank

• different foods

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​Jancarlo wanted to see what type of popcorn had the least amount of kernels left after being popped for three minutes. He used buttered popcorn, plain popcorn, and cheddar popcorn for this experiment. Jancarlo microwaved each type of popcorn for three minutes in the same microwave. After three minutes, he counted how many unpopped kernels were left in each bag. The chart below shows how many kernels were left.

Groups:

(a) Independent Variable

,

(b) Dependent Variable

,

(c) Constants

• time in microwave

• Type of Popcorn

• microwave

• amount of kernels left

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​Jancarlo wanted to see what type of popcorn had the least amount of kernels left after being popped for three minutes. He used buttered popcorn, plain popcorn, and cheddar popcorn for this experiment. Jancarlo microwaved each type of popcorn for three minutes in the same microwave. After three minutes, he counted how many unpopped kernels were left in each bag. The chart below shows how many kernels were left.

IN THIS EXAMPLE, which hypothesis was correct?

• If I pop the cheddar bag of popcorn, then it will have the least amount of kernels left over.

• If I pop the buttered bag of popcorn, then it will have the least amount of kernels left over.

• If I pop the plain bag of popcorn, then it will have the least amount of kernels left over.

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NGSS.MS-ETS1-3

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Assuming the constants of the microwave,

the size of each bag,

and the amount of time in the microwave,

​what conclusion can you draw from

THIS data?

• All types of popcorn have the same amount of pieces.

• There are more popped pieces in the cheddar bag.

• There are more popped pieces in the plain bag.

• The microwave did not work on the buttered bag of popcorn.

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Bob had the following information in her science notebook after the class did an experiment:

Based on the experiment, what CONCLUSION can you draw from this data

• The electromagnet does not work as well when there are more coils around the nail.

• The more coils around the nail, the more paper clips the electromagnet will pick up.

• The amount of coils increases by 5 in each trial.

• When there were 15 coils, the electromagnet picked up 16 paper clips.

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NGSS.MS-ETS1-3

Match

• Independent variable

• The more coils around the nail, the more paper clips the electromagnet will pick up.

• Conclusion

• number of paper clips attached

• Constants

• number of coils

• Dependent Variable

• If you put more coils around an electromagnet it will pick up the same # of coils.

• Hypothesis

• battery size, nail, size of paper clips

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NGSS.MS-ETS1-1

According to the graph, which combination of bird food would probably bring the LEAST birds to the feeder?

CHOOSE 2

• sunflower

• cracked corn

• millet

• safflower

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