BASIC SCIENCE

A simple machine is a machine that uses a ______ force.

The moon’s gravity causes ______ in the sea.

The _______ is the natural satellite of the Earth.

_________ is the main cause of landslides.

• Pollution

• Afforestation

• Deforestation

• Wild animals

______ is an instrument used to measure earthquakes.

• Seismograph

• Wind vane

• Rain gauge

• Thermometer

Earthquakes are measured on the ________ scale.

• Earthquake

• Richter

• Weighing

• All of the above

Shortage of food and water affecting many people results in _______.

• Famine

• Drought

• After shocks

• Cyclone

________ satellite is used to take photographs of the earth to study the features of the earth’s surface.

• Communication

• Remote sensing

• Weather

• Space

The first satellite to be launched was _______

• Sputnik 1

• INSAT 1A

• INSAT 1B

• Rohini

Small tremors called __________ can be felt even after an earthquake.

• Tremors

• Vibrations

• After shocks

• Wind