The Ever-Evolving World of Science — Science STD 7 — Question

What makes sea and land breeze different?

Describe the working principle of a pinhole camera.

For setting curd, a small amount of curd is added to warm milk. The microbes present in the curd help in setting if the temperature of the mixture remains approximately between 35°C to 40°C. At places where room temperature remains much below the range, setting of curd becomes difficult. Suggest a way to set curd in such a situation.

Distinguish between uniform and non-uniform motion using the example of a car moving on a straight highway with no traffic and a car moving in city traffic.

Write differences between clinical thermometer and laboratory thermometer.

Write short notes on reproduction in plants by vegetative propogation.

Why tropical rain forest has large population of animals?

What causes a thunderstorm?

Imagine you grow two plants - one in a greenhouse and one outdoors. What variables will affect photosynthesis?