"The 2nd Battle of the Brains" - DIFFICULT ROUND

Mathematics:

The thickness of 10 pieces of wood placed on top of each other is 250 cm. What is the thickness of each piece?

• 2.5 cm

• 25 cm

• 250 cm

Science:

It is the basic unit of life.

• cell

• organ

• system

Social Studies:

The main trading ship which the Phoenicians used a lot in their trading journeys was called _____________.

• cruise ship

• galley

• cargo ship

Mathematics:

1 3/4 + 1/4 = 2

• True

• False

• Not Certain

Science:

________________ the process by which green plants produce their own food.

• carbon cycle

• photosynthesis

• transpiration

Social Studies:

The ____________________ were the first people who used the Egyptian hieroglyphs.

• Chaldeans

• Assyrians

• Phoenicians

Mathematics:

What is the place value of the underlined digit?

24.75

• ones

• tenths

• hundredths

Science:

"For every action, there is an equal and opposite reaction."

• Newton's First Law

• Newton's Second Law

• Newton's Third Law

Social Studies:

Who invented the purple dye?

• Assyrians

• Phoenicians

• Romans

Mathematics:

1/2 + 1/5 = __________

• 2/7

• 3/8

• 7/10