Member since June 19 2011
My Activity:
98 questions
602 answers
LEVEL
16
What's the difference between intracellular and extracellular enzymes?
tracked 15 years ago
What's the difference between an animal cell and a plant cell?
tracked 15 years ago
How does a bicycle dynamo generates current?
tracked 15 years ago
What are the disadvantages of using nuclear power?
tracked 15 years ago
What are the advantages of using nuclear power?
tracked 15 years ago
Why are fossil fuels not a clean method of producing energy?
tracked 15 years ago
How can we reduce the greenhouse effect on the Earth?
tracked 15 years ago
How to calculate the kinetic energy possessed by a moving object?
tracked 15 years ago
How could you convert heat energy into mechanical energy?
tracked 15 years ago
Where is the best location to place the cooling element in a freezer? Why?
tracked 15 years ago
How are echoes used by ships to find the depth of the sea beneath them?
tracked 15 years ago
What are two kinds of waves that can be used for cooking?
tracked 15 years ago
What are the advantages of sending messages in digital form?
tracked 15 years ago
What's the difference between analogue signal and digital signal?
tracked 15 years ago
Why does food stay fresher for longer after it has been exposed to gamma radiation?
tracked 15 years ago
Why is it important not to damage the ozone layer around the Earth?
tracked 15 years ago
Why are X-rays used to check for broken bones?
tracked 15 years ago
Why do microwave ovens cook food much more quickly than normal ovens?
tracked 15 years ago