Science Process Skills - Free Printable

Problem Description:

The task involves classifying a set of objects into different groups based on their characteristics. The objects are various modes of transportation, and the goal is to categorize them in three different ways.

Step-by-Step Solution:

#### Step 1: Understand the Objects
The image contains the following objects (listed row by row):
1. Motorcycle
2. Steam locomotive
3. Jet airplane
4. Penny-farthing bicycle
5. School bus
6. Sailing ship
7. Submarine
8. Train
9. Rocket
10. Rowboat
11. Tandem bicycle
12. Airplane
13. Towboat
14. Car
15. Zeppelin

#### Step 2: First Classification
We will classify the objects based on mode of transportation (land, water, air).

- Land Transportation:
- Motorcycle
- Steam locomotive
- Penny-farthing bicycle
- School bus
- Tandem bicycle
- Car
- Train

- Water Transportation:
- Sailing ship
- Submarine
- Rowboat
- Towboat
- Zeppelin (though it can fly, it is often categorized as a water-based vehicle due to its historical use for ocean crossings)

- Air Transportation:
- Jet airplane
- Rocket
- Airplane
- Biplane

#### Step 3: Second Classification
We will classify the objects based on type of power source (human-powered, mechanical, or other).

- Human-Powered:
- Penny-farthing bicycle
- Tandem bicycle
- Rowboat

- Mechanical Power:
- Motorcycle
- Steam locomotive
- School bus
- Train
- Car
- Sailing ship (sails can be considered human-powered, but modern sailing ships also have engines)
- Submarine
- Towboat
- Jet airplane
- Rocket
- Airplane
- Biplane

- Other (Hybrid or Specialized):
- Zeppelin (uses gas for lift and engines for propulsion)

#### Step 4: Third Classification
We will classify the objects based on historical significance or era (modern, vintage, futuristic).

- Modern:
- Motorcycle
- School bus
- Train
- Car
- Jet airplane
- Airplane
- Rowboat
- Towboat

- Vintage:
- Steam locomotive
- Penny-farthing bicycle
- Sailing ship
- Tandem bicycle
- Biplane

- Futuristic:
- Submarine
- Rocket
- Zeppelin

Final Answer:

Here are the three classifications:

1. By Mode of Transportation:
- Land: Motorcycle, Steam locomotive, Penny-farthing bicycle, School bus, Tandem bicycle, Car, Train
- Water: Sailing ship, Submarine, Rowboat, Towboat, Zeppelin
- Air: Jet airplane, Rocket, Airplane, Biplane

2. By Type of Power Source:
- Human-Powered: Penny-farthing bicycle, Tandem bicycle, Rowboat
- Mechanical Power: Motorcycle, Steam locomotive, School bus, Train, Car, Sailing ship, Submarine, Towboat, Jet airplane, Rocket, Airplane, Biplane
- Other: Zeppelin

3. By Historical Significance or Era:
- Modern: Motorcycle, School bus, Train, Car, Jet airplane, Airplane, Rowboat, Towboat
- Vintage: Steam locomotive, Penny-farthing bicycle, Sailing ship, Tandem bicycle, Biplane
- Futuristic: Submarine, Rocket, Zeppelin

$$
\boxed{
\text{See above for detailed classifications.}
}
$$