1. Which of the following describes a volcano?
A. a crater C. a high mountain
B. an explosion D. an opening in the earth’s crust
2. What do you call the opening in a volcano through which gases and lava may escape?
A. fissure B. focus C. pipe D. vent
3. How is a volcano formed? It is formed when_______________ .
A. lava gets out of the crater
B. a mountain sends out hot lava
C. rocks and soil form a big mound
D. hot materials reach the earth’s surface and builds up
4. Volcanoes that have erupted in the last 600 years, and are expected to erupt
again are called ______ .
A. active B. buried C. dormant D. extinct
5. What is a dormant volcano? A volcano that _____ .
A. is made of lava
B. has currently erupted
C. have not shown signs of activity
D. has erupted and entered a long period of inactivity
6. Which of these come out of volcanoes?
A. ash B. gas C. steam D. all of these
7. How does magma come out of a volcano? The magma _________.
A. is pushed out by rocks
B. forms on the surface of the earth
C. comes out of the opening in the ground
D. rise to the surface due to heat and pressure
8. Which of the following is formed when the top of a volcano collapses into a partially
emptied magma chamber?
A. caldera B. crater C. fissure D. volcanic rock
9. Which of these is NOT observed when a volcano is about to erupt?
A. earthquake C. rumbling sound
B. lahar D. unusual behavior of animals
10. Which of these is considered a beneficial effect of volcanic eruption?
A. They destroy lives and properties.
B. Displacement of people from their homes.
C. Sickness such as allergies and respiratory ailments.
D. Geothermal energy is produced as source of electricity.
