Page 114 - Active Science 5 Ebook and Activity

Practice Time

A. Tick the correct option.

1. The point above the focus when an earthquake begins is called __________.
a. mantle b. focus

c. epicentre d. core
2. Which of the following disasters is caused by shaking on the earth’s surface?

a. Flood b. Earthquake
c. Tsunami d. Drought

3. An overflow of water can cause __________.
a. flood b. tsunami
c. tide d. earthquake

4. Which of the following natural disasters is caused by shortage of water?
a. Drought b. Tsunami

c. Earthquake d. Flood
5. __________ volcanoes are capable of erupting.
a. Extinct and Dormant

b. Extinct and Active
c. Active, Dormant and Extinct

d. Dormant and Active

B. State whether the following statements are true or false.
1. Earthquakes are recorded, detected and measured by an instrument called
seismograph. _____

2. The hot magma that comes out of the earth’s surface is called lava. _____
3. Flood and drought are similar. _____
4. Drought occurs due to excess of water. _____

5. Flood occurs due to shortage of water. _____

C. Fill in the blanks.
1. The outermost layer of the earth is called _________.
2. The intensity of earthquake is measured by _________.

3. A flood is ___________ of water.
4. The rise and fall of levels of sea waves can cause ___________.

D. Short Answer Questions.

1. What is a volcano?
2. What is an extinct volcano?

3. Why do the earthquakes occur?

114 Active Science-5