Measurement and Scientific tools worksheet - Free Printable

Worksheet: Measurements and Scientific Tools

#### Learning Objectives:
1. Distinguish between quantitative and qualitative measurement.
2. Distinguish between accuracy and precision.
3. Conclude why significant digits are important.
4. Define some scientific tools used by scientists.
5. Investigate some scientific tools used by life scientists.

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Fill in the blanks:

#### 1. There are 5 birds on the tree is a ________ measurement while the birds are brown in color is a ________ measurement.
- Quantitative measurement: This refers to measurements that involve numbers or quantities. "There are 5 birds" is a quantitative measurement because it involves counting.
- Qualitative measurement: This refers to descriptions that do not involve numbers but describe qualities or characteristics. "The birds are brown in color" is a qualitative measurement because it describes a characteristic without using numbers.

Answer:
- Quantitative
- Qualitative

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#### 2. The length of the book is 18 cm. Here, cm is the ________ and is the unit of ________.
- cm (centimeter): This is the unit of measurement.
- Length: The quantity being measured is length.

Answer:
- Unit
- Length

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#### 3. Fill the table.

| Quantity measured | Unit |
|-------------------|------|
| Length | m |
| Mass | kg |
| Time | s |
| Temperature | °C |
| Intensity of light | cd |
| Electric current | A |
| Amount of substance | mol |

Explanation:
- Length: Measured in meters (m).
- Mass: Measured in kilograms (kg).
- Time: Measured in seconds (s).
- Temperature: Measured in degrees Celsius (°C) or Kelvin (K).
- Intensity of light: Measured in candela (cd).
- Electric current: Measured in amperes (A).
- Amount of substance: Measured in moles (mol).

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#### 4. Watch the video below and answer question 5.
(Note: Since there is no video provided, I will assume this step is skipped for now.)

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#### 5. Convert the following:
a) \( 50 \, \text{cm} = \_\_\_\_\_ \, \text{m} \)
b) \( 0.235 \, \text{m} = \_\_\_\_\_ \, \text{mm} \)
c) \( 75.25 \, \text{L} = \_\_\_\_\_ \, \text{kL} \)
d) \( 0.8942 \, \text{kg} = \_\_\_\_\_ \, \text{g} \)

Conversions:
1. \( 50 \, \text{cm} \) to \( \text{m} \):
- \( 1 \, \text{m} = 100 \, \text{cm} \)
- \( 50 \, \text{cm} = \frac{50}{100} \, \text{m} = 0.5 \, \text{m} \)

2. \( 0.235 \, \text{m} \) to \( \text{mm} \):
- \( 1 \, \text{m} = 1000 \, \text{mm} \)
- \( 0.235 \, \text{m} = 0.235 \times 1000 \, \text{mm} = 235 \, \text{mm} \)

3. \( 75.25 \, \text{L} \) to \( \text{kL} \):
- \( 1 \, \text{kL} = 1000 \, \text{L} \)
- \( 75.25 \, \text{L} = \frac{75.25}{1000} \, \text{kL} = 0.07525 \, \text{kL} \)

4. \( 0.8942 \, \text{kg} \) to \( \text{g} \):
- \( 1 \, \text{kg} = 1000 \, \text{g} \)
- \( 0.8942 \, \text{kg} = 0.8942 \times 1000 \, \text{g} = 894.2 \, \text{g} \)

Answers:
a) \( 0.5 \, \text{m} \)
b) \( 235 \, \text{mm} \)
c) \( 0.07525 \, \text{kL} \)
d) \( 894.2 \, \text{g} \)

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Final Answer:

\[
\boxed{
\begin{array}{l}
\text{1. Quantitative, Qualitative} \\
\text{2. Unit, Length} \\
\text{3. Table filled as above} \\
\text{4. Skipped (no video)} \\
\text{5. a) } 0.5 \, \text{m}, \text{ b) } 235 \, \text{mm}, \text{ c) } 0.07525 \, \text{kL}, \text{ d) } 894.2 \, \text{g}
\end{array}
}
\]