Recycling and sustainability in EV Technology - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the sentence to explain what recycling means.

EV Technology

Recycling is the process of converting waste materials into [1] products.

Drag options to blanks, or click blank then click option'

Aold

Bnew

Charmful

Duseless

Attempts:

3 left

💡 Hint

Common Mistakes

Choosing 'old' because waste is old, but recycling creates new items.

Recycling means turning waste into new products to reduce waste and save resources.

2fill in blank

medium

Complete the sentence to identify a key benefit of recycling.

EV Technology

Recycling helps reduce [1] pollution by lowering the need for raw materials.

Drag options to blanks, or click blank then click option'

Anoise

Bwater

Cair

Dlight

Attempts:

3 left

💡 Hint

Common Mistakes

Confusing water pollution with air pollution in this context.

Recycling reduces air pollution because it lowers the need to extract and process raw materials.

3fill in blank

hard

Fix the error in the sentence about sustainability.

EV Technology

Sustainability means using resources in a way that [1] the needs of future generations.

Drag options to blanks, or click blank then click option'

Ameets

Bignores

Csupports

Dharms

Attempts:

3 left

💡 Hint

Common Mistakes

Choosing 'supports' which is close but not the exact meaning.

Sustainability means meeting the needs of the present without harming future generations.

4fill in blank

hard

Fill both blanks to complete the sentence about reducing waste.

EV Technology

To reduce waste, we should [1] items when possible and [2] products instead of throwing them away.

Drag options to blanks, or click blank then click option'

Areuse

Bthrow

Crepair

Dbuy

Attempts:

3 left

💡 Hint

Common Mistakes

Choosing 'throw' which increases waste instead of reducing it.

Reusing items and repairing products help reduce waste by extending their life.

5fill in blank

hard

Fill all three blanks to complete the dictionary comprehension about recycling materials.

EV Technology

recycled = [1]: [2] for [3] in materials if materials[[3]] == 'plastic'

Drag options to blanks, or click blank then click option'

Amaterial.upper()

Bmaterial

Attempts:

3 left

💡 Hint

Common Mistakes

Using different variable names causing errors.

This comprehension creates a dictionary with keys and values from materials that are plastic.

Practice

1. What is the main goal of recycling in sustainability?

easy

A. To turn old materials into new products

B. To increase the use of plastic

C. To create more waste

D. To use more energy

Solution

1. Step 1: Understand recycling purpose

   Recycling means reusing old materials to make new things.

2. Step 2: Connect recycling to sustainability

   This reduces waste and saves resources, helping the environment.

3. Final Answer:

   To turn old materials into new products -> Option A

4. Quick Check:

   Recycling = reuse materials [OK]

Hint: Recycling means reusing old stuff [OK]

Common Mistakes:

• Thinking recycling creates more waste
• Believing recycling uses more energy
• Confusing recycling with waste creation

2. Which of the following is a correct example of a sustainable action?

easy

A. Throwing all trash into one bin

B. Leaving lights on when not needed

C. Cutting down trees without planting new ones

D. Using reusable bags instead of plastic bags

Solution

1. Step 1: Identify sustainable actions

   Sustainable actions save resources and reduce harm to nature.

2. Step 2: Evaluate each option

   Using reusable bags reduces plastic waste, which is sustainable.

3. Final Answer:

   Using reusable bags instead of plastic bags -> Option D

4. Quick Check:

   Reusable bags = sustainable choice [OK]

Hint: Choose actions that save resources [OK]

Common Mistakes:

• Thinking all trash in one bin is sustainable
• Believing wasting electricity is sustainable
• Ignoring tree planting importance

3. Consider this code snippet representing waste sorting:

bins = {'plastic': 5, 'paper': 3, 'glass': 2}
recycled = {k: v*2 for k, v in bins.items() if v > 2}
print(recycled)

What will be the output?

medium

A. {'plastic': 10, 'paper': 6}

B. {'plastic': 10, 'paper': 6, 'glass': 4}

C. {'plastic': 5, 'paper': 3}

D. {'glass': 4}

Solution

1. Step 1: Understand dictionary comprehension with condition

   Only items with value > 2 are included and values doubled.

2. Step 2: Apply condition to bins

   'plastic' (5) and 'paper' (3) qualify; 'glass' (2) does not.

3. Step 3: Calculate new values

   'plastic': 5*2=10, 'paper': 3*2=6

4. Final Answer:

   {'plastic': 10, 'paper': 6} -> Option A

5. Quick Check:

   Filter >2 and double values = {'plastic':10,'paper':6} [OK]

Hint: Filter values >2, then double [OK]

Common Mistakes:

• Including 'glass' which has value 2
• Not doubling the values
• Printing original dictionary

4. This code tries to calculate total recycled items but has an error:

items = {'plastic': 4, 'paper': 6, 'glass': 3}
total = 0
for item in items:
    total += items[item]
print(totall)

What is the error?

medium

A. Using += instead of =

B. Missing colon after for loop

C. Variable name typo in print statement

D. Incorrect dictionary syntax

Solution

1. Step 1: Check variable names used

   Variable 'total' is defined, but 'totall' is printed (typo).

2. Step 2: Identify impact of typo

   Printing 'totall' causes a NameError because it is undefined.

3. Final Answer:

   Variable name typo in print statement -> Option C

4. Quick Check:

   Print typo = NameError [OK]

Hint: Check variable names carefully [OK]

Common Mistakes:

• Ignoring typo and assuming logic error
• Thinking dictionary syntax is wrong
• Confusing += with =

5. A community wants to reduce waste by recycling and composting. They have 100 kg of waste: 40 kg plastic, 30 kg food scraps, 20 kg paper, and 10 kg glass. If they recycle all plastic, paper, and glass, and compost all food scraps, how much waste is diverted from landfill?

hard

A. 70 kg

B. 100 kg

C. 60 kg

D. 90 kg

Solution

1. Step 1: Identify recyclable and compostable waste

   Plastic (40 kg), paper (20 kg), glass (10 kg) are recycled; food scraps (30 kg) are composted.

2. Step 2: Calculate total diverted waste

   Sum recycled and composted: 40 + 20 + 10 + 30 = 100 kg.

3. Step 3: Confirm total waste and diversion

   Total waste is 100 kg; all waste is diverted from landfill.

4. Final Answer:

   100 kg -> Option B

5. Quick Check:

   All waste recycled or composted = 100 kg diverted [OK]

Hint: Add all recycled + composted weights [OK]

Common Mistakes:

• Forgetting to include composted food scraps
• Adding only recycled waste
• Misreading total waste amount