home video

science

• biology

• chemistry

• geology

• English

what is it?

• screw

• electrical tape

• magnifier

• slot

this?

• sea bed

• pile

• well

• derrick

What kind of metal is it?

• aluminum

• ferrous metal

• zink

• copper

bending property

• elesticity

• brittle

• alloy

• to improve

what caused the incident?

• ignite

• fuel

• tank

• possible cause

fire prevention

• extinguish

• go off

• go on

• pressure gauge

combustible substance

• steel

• fuel

• zink

• bronze

a man who loves to work

a mixture of different metals