10th Science Refresher Course
Answer key
Topic 2 - FLUIDS
- Class: 10
- Subject: Science - EM
- Topic: 2. FLUIDS
I. Fill in the blanks.
1. Unit of Force is ____________
2. Force has both magnitude and direction. It is a ____________ quantity.
3. Pressure exerted by a liquid is increased by____________
4. SI Unit of pressure is ____________
5. The air that exerts pressure in the atmosphere is called ____________
6. The depth of a liquid column increases and the ____________ also increases.
7. The instrument used to measure atmospheric pressure is ____________
8. A simple barometer was first constructed by ____________.
9. A drinking straw works on the ____________
10.Rain drops take up spherical shape naturally due to the ____________ of water.
II. State true or false.
1. Hydraulic press works on the principle of Pascal’s law.
2. Density of water is less than density of cooking oil.
3. Salt water provides more buoyant force than fresh water.
4. Liquid exerts pressure in the bottom as well as on the walls of the container.
5. A body will sink if the weight of the body is greater than the buoyant force
