Last major review

1
Last major review

• Your turn to try a few

2
KHDmdcm

• Convert 23.4 cm to m

3
KHDmdcm

• Convert 9.54 mg to kg

4
KHDmdcm

• Convert 17.2 L to dL

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KHDmdcm

• Convert 4.35 mg to kg

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KHDmdcm

• Convert 23.4 dg to ng

7
How many sig figs are in?

• 4500
• .0003404
• 19.0

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How many sig figs are in?

• 5.43
• 976,000,000
• 2040

9

• How long is the arrow shown below?

10

• What is the volume of water shown?

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A density graph

• Which color shows the greatest density?

grams
milliliters
12
Parts of an experiment

• A soldier predicts that if he increases the angle
  of his gun, then his bullets will continually go
  farther.
• He shoots the gun level once, then 12 more times,
  each time increasing the angle.
• He then measures the distance to each bullet hole.

• What is the hypothesis?
• What is the independent variable?
• What is the dependent variable?
• What are his controls?
• Firing level
• Bullet type
• Gun type
• Wind conditions

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Design an experiment

• Hypothesis If you decrease the amount of soda
  in your diet, you will burp less.
• You must have
• Control
• Independent Variable
• Dependent Variable