Math and Science Bee Olympics Easy Round

Why do we see lightning before we hear thunder?

• Because light is slower than the sound.

• Because light is faster than the sound.

• Both light and sound travel at the same speed.

• Because light and sound can't travel in a vacuum.

Answer explanation

• Speed of light: About 300,000 km/s (186,000 miles/second). It takes only a fraction of a second for light to reach your eyes, even from a distant storm.

• Speed of sound: About 343 m/s (1,125 feet/second) in air. That’s much slower, so the sound of thunder takes longer to reach your ears.

Sam spent 1/4 of her money on a calculator. Then she spent 1/3 of the remaining money on a book and had Php.250 left. How much money did she have at first?

• Php. 500

• Php. 600

• Php. 700

• Php. 400

Answer explanation

Complete the statement 10:15 = ___: 45

• 35

• 40

• 30

• 25

Answer explanation

What number must be subtracted from 354 to obtain 158?

• 197

• 196

• 195

• 194

Solve for the average of 86,88,84 and 92.

• 87.5

• 87

• 86.5

• 86

Find the area of the rectangle whose length is 20.3 cm and the width is 5.5cm.

• 203 cm

• 110.65 cm²

• 111.65 cm²

• 135.65 cm²

Answer explanation

What is the 5% of 35?

• 1.75

• 1.35

• 17.5

• 13.5

Answer explanation

If a triangle has sides of 3 cm, 4 cm, and 5 cm, what type of triangle is it?

• Equilateral

• Right

• Isosceles

• Scalene

Answer explanation

What is the volume of a box with a length of 5 cm, width of 3 cm, and height of 2 cm?

• 15 cm³

• 20 cm³

• 25 cm³

• 30 cm³

Answer explanation

If a plant grows 2 cm each day, how tall will it be in mm after 10 days?

• 20 mm

• 100 mm

• 250 mm

• 200 mm

Answer explanation