Geo class 7

1. Environment is basic life support of all the living beings.

2. Human beings cannot modify natural environment.

• 1 only

• 2 only

• Both 1 and 2

• None of the above

1. Lithosphere - Land Surface

2. Hydrosphere - Domain of water

3. Atmosphere - Blanket of air which surrounds the earth

4. Biosphere - Kingdom of plants and animals

• 1 and 2

• 2 and 3

• 1 and 3

• All of the above

1. Hydrosphere comprises only seas and oceans.

2. Landforms are found over the continents and also on the ocean floor.

3. Lithosphere is not a component of environment.

Select the incorrect answers.

• 1 only

• 2 only

• 2 and 3 only

• 1 and 3 only

1. The centrifugal force of the earth holds the atmosphere around it.

2. The changes in the atmosphere produces changes in the hydrosphere and lithosphere

• 1 only

• 2 only

• Both 1 and 2

• None of the above

1. Biosphere is the narrow zone of the earth where hydrosphere, lithosphere and atmosphere interact with each other.

2. All the plants, animals and human beings are elements of biosphere

• 1 only

• 2 only

• Both 1 and 2

• None of the above

Which of the following is/ are example of Ecosystem?

1. Aquarium

2. Coral reef

3. Biosphere reserve

• 1 and 3 only

• 1 and 2 only

• 2 only

• 1, 2 and 3

1. Continental Crust - Silica and Magnesium

2. Oceanic Crust - Silica and Aluminum

3. Core - Nickel and Ferrous

Which of the above pairs is/are correctly matched?

• 1 and 2 only

• 2 and 3 only

• 3 only

• None of the above

1.Igneous rocks are formed when molten silica cools and become solid.

2. These rocks are called primary rocks.

Select the correct answer using the code given below

• 1 only

• 2 only

• Both 1 and 2

• None of the above

1. Temperate evergreen forest are commonly found along the eastern margin of the continents.

2. They comprises both hard and soft wood trees.

• 1 only

• 2 only

• Both 1 and 2

• none of the above

Which of the following are countries where temperate deciduous forest are found?

1. USA

2. China

3. Chile

4. Brazil

• 1 and 2 only

• 1, 3 and 4 only

• 2 and 4 only

• 1,2 and 3 only