Here is an interactive math quiz that will test your knowledge of measurement, temperature, percentages, and fractions. Simply click on the answers and you will find out if you answered correctly. The answers are estimations, so the questions below involve making educated guesses.

1).A lava flow has covered a short section of highway in Hawaii. In the distance is another arm of the flow (November, 1994). The initial flows are only about 1 meter thick. After they are are in place, inflation makes the lava thicker. Estimate how thick the inflated lava in this picture is:

a). 5-10 m thick.   b). 30-40m thick   c). 300-400m thick

2. The man is standing on a thick layer of solid lava that is over a lava tube. The yellow light you see in the picture is coming from the heat generated by the liquid lava. If the man is 170 cm tall, how thick is the lava he is standing on?

3. Lava has surrounded a house near Kalapana, Hawaii. How thick do you think the lava is?

4. Active lava is moving through these low bushes at a speed of 2m every minute. How many metres of low bush will be covered by lava in 40 minutes?

5. A lava flow has reached highway 130 near Queen's Bath, Hawaii. The black smoke and the flames are coming from the burning pavement. Which of the temperatures below do you think is probably correct?

6. The volcano below is erupting. How high do you think the lava is being flung out into the air?

a). 5m b). 5km c). 50cm

7. If the old truck trapped in the lava below stands 2m off the ground, how thick do you think the lava is?

8. Lava is erupting from the volcano below.

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