http://en.wikipedia.org/wiki/Speed

What is the best unit to measure the speed of a snail?

A snail crawls 1 mm/s

What is the best unit to measure the speed of a racing car?

At Bahrain,formula one racing cars travel at an average speed of 205 km/h

What is the best unit to measure the speed of a 100 m runner?

In 2009 Usain Bolt ran a world record for 100 m in 9.58 s

What is the best unit to measure the speed of the space shuttle?

The space shuttle travels at a speed of 28 000 km/h.

A large piece of bamboo is heavier than a small piece of rock

Bamboo floats

Rock sinks

At 4°C pure water has a density (weight or mass) of about 1 g/cm3

http://www.iem-inc.com/tooldens.html

357 g/L

390 g/L in boiling water

35 g/L

315 g/L

Per 100 gJaffa cake 370 cal

Bread white (thick slice) 240 calChapatis 300 cal

Cornflakes 370 calMacaroni (boiled) 95 cal

Muesli 390 calNaan bread (normal) 320 cal

Noodles (boiled) 70 calPasta ( normal boiled ) 110 cal

Potatoes** (boiled) 70 calPotatoes** (roast) 140 calRice (white boiled) 140 calSpaghetti (boiled) 101 cal

At 4°C pure water has a density (weight or mass) of about 1 g/cm3

SINK