The units of fundamental physical quantities are known as ____________ units.

Answer

To solve the question, "The units of fundamental physical quantities are known as ____________ units," we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: The question asks for the term used to describe the units associated with fundamental physical quantities.

2. **Identify Fundamental Physical Quantities**: Fundamental physical quantities are the basic quantities that are not derived from other quantities. There are seven fundamental physical quantities:
- Mass
- Length
- Time
- Electric Current
- Temperature
- Amount of Substance
- Luminous Intensity

3. **Determine the Units for Each Quantity**:
- Mass is measured in kilograms (kg)
- Length is measured in meters (m)
- Time is measured in seconds (s)
- Electric Current is measured in amperes (A)
- Temperature is measured in kelvins (K)
- Amount of Substance is measured in moles (mol)
- Luminous Intensity is measured in candelas (cd)

4. **Identify the Term for the Units**: The units of these fundamental physical quantities are referred to as "fundamental units."

5. **Fill in the Blank**: Therefore, the answer to the question is "fundamental units."

### Final Answer:
The units of fundamental physical quantities are known as **fundamental units**.

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