Electric Current and its Effects — Science STD 7 — Question

What is the opening through which air enters the nose?

How do you define heat flow?

If wells dug to get groundwater, then it dry up after sometime, what initiative should be taken to get water from it again?

Give an example of oscillatory motion.

What is the cause of rainbow formation?

When are the maximum and minimum temperatures likely to occur during the day?

State whether the following statements are True or False. In case a statement is false, write the correct statement.
Sewage is a solid waste which causes water pollution and soil pollution.

Indicate the type of climate of the following areas: North-east India: __________________.

‘Beard ape’ is another name for which animal?

Define shadow.