FIRST SUMMATIVE EXAM IN EARTH AND LIFE SCIENCE

1. Which of the following is not part of the layer of the Earth?

a. crust      b. mantle      c. troposphere     d. core

2. The layer of earth which consists of solid nickel and iron?   

a. Crust     b. mantle     c. inner core     d. outer core         

3. Which of the following is the reason why inner core is solid while outer core is liquid given       that both parts have the same chemical composition?

a. Inner core experiences higher pressure which raises the melting point of iron and nickel

b. Inner core experiences lower pressure which raises the melting point of iron and nickel

c. Inner core experiences higher temperature than the outer core             

4. Knowing about the effect of higher altitude to air temperature in troposphere, what would           you do when climbing mountains? 

a. brings an umbrella          c. bring enough food         

b. bring/wear jackets          d. bring flashlight

5. What is the most abundant element in the Earth’s atmosphere?

A. argon     b. carbon dioxide     c. nitrogen     d. oxygen

6. What is the correct order of Earth’s atmospheric layer from bottom to top?     

a. Stratosphere, mesosphere, troposphere, thermosphere, exosphere

b. mesosphere, stratosphere, troposphere, thermosphere, exosphere

c. troposphere, stratosphere, mesosphere, thermosphere, exosphere

d. stratosphere, troposphere, mesosphere, thermosphere, exosphere

7. Why is the presence of ozone layer in the stratosphere important for survival of living things on Earth?   

a. It warms Earth’s surface                                 c.it helps in cloud formation

b. it makes jet flying more comfortable          d. offer protection from the sun’s harmful UV rays

8. In which of the following layers of atmosphere does temperature decrease as altitude increases?

a. mesosphere and stratosphere        c. troposphere and stratosphere

b. troposphere and mesosphere        d. thermosphere and stratosphere    

9. The solid outer section of Earth is referred to as the __________.

a. atmosphere     b. biosphere     c. hydrosphere     d. lithosphere 

10. Which is not a typeof tectonic plate boundary?   

a. Convergent        b. divergent           c. insurgent           d. transform         

11. Which process is not involved in the formation of sediments?

a. Cooling          b. deposition          c. transportation          d. weathering

12. When heat and pressure are applied to a sedimentary rock, it changes into      .              

a. intrusive igneous rock    c. extrusive igneous rock

b. metamorphic rock           d. magma             

13. Which of the following best describes a mineral? 

a. a solid natural material with a crystal structure

b. a material that was once living but decayed

c. a liquid chemical used to make soil more fertile

d. a nutrient produced by plants that other organisms need

14. A student sorted mineral samples into two groups: dull and shiny. Which of the following         properties did the student use to sort mineral samples into groups.          

a. cleavage            b. hardness            c. luster           d. streak

15. Planet A is 149.6million km from its own star (Sun’s size) with a 100-mile thick        

atmosphere made up of77%N, 21%O2 and 1%Ar, while Planet B is 227 million km from its sun with a 1-mile-thickatmosphere made up of 50%N, 15%O2 and 35% CO2. Which of the two is habitable?

a. Planet A             b. Planet B            c. Both A&B            d. None of the above