How Heavy How Light

What is the central idea of the chapter "How Heavy? How Light?"?

1. Understanding weight, comparing heavy and light objects, using grams and kilograms correctly, estimating weight, and applying measurement skills in everyday life.
2. Learning only about time.
3. Learning only about shapes.
4. Learning only about money.

Which of these is likely to weigh less than 100 grams?

1. School bag
2. Watermelon
3. Pencil box with books
4. Eraser

Why is estimating weight useful?

1. It helps us make reasonable guesses before measuring.
2. It replaces accurate measurement completely.
3. It wastes time.
4. It is never useful.

Which pair uses the correct unit?

1. Car -- grams
2. Pencil -- kilograms
3. Watermelon -- kilograms
4. Train -- grams

What should you do before weighing an object?

1. Choose the correct weighing instrument
2. Guess without checking
3. Measure it with a ruler
4. Count its sides

Why do shopkeepers use weighing balances?

1. To measure the weight of goods accurately
2. To measure temperature
3. To measure time
4. To measure length

If a bag of rice weighs 5 kg, how many grams does it weigh?

1. 500 g
2. 1000 g
3. 5000 g
4. 50 g

Which unit is best for measuring the weight of a chocolate bar?

1. Kilometre
2. Gram
3. Metre
4. Hour

Which object is likely to weigh about 1 kilogram?

1. An apple
2. A school dictionary
3. A feather
4. A pencil

How many grams are there in one kilogram?

1. 10 grams
2. 100 grams
3. 500 grams
4. 1000 grams

Which standard unit is commonly used to measure the weight of a school bag?

1. Centimetre (cm)
2. Kilogram (kg)
3. Litre (L)
4. Hour (h)

Which instrument is commonly used to measure the weight of an object?

1. Ruler
2. Clock
3. Weighing balance
4. Thermometer