National Science Olympiad (Soal OSN IPA SD) For Elementary School 2006 Theory 1

Below is a matter of National Science Olympiad For elementary school used in the National Science Olympiad (OSN). The quetions consist problem solving OSN theory 1 , theory 2, and science experiment OSN 2006. You can download it by clicking on the word download in addition to the title the following exam in the second paragraf. You can use this problem to train your students to become the champion in the competition of national science olympiad. Good luck.

There are some processes that form a kind of rocks. Rocks formed by the cooling and hardening of magma or lava are called:
a. sedimentary
b. igneous
c. organic
d. metamorphic
e. clastic

Two lights strung together series. The first is a lamp to lamp posts watt/220 60 volts, and the second is a lamp to lamp posts watt/220 100 volts. Which lights are lit more brightly?

Two parallel strung lights. The first is a lamp to lamp posts watt/220 60 volts, and the second is a lamp to lamp posts watt/220 100 volts. Which lights are lit more brightly?

The position of the sun in the sky from morning to evening can be used as an indication of time (hours). If you are asked to specify the hour by the sun's position, how do you design a watch?

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