Math Sci Quiz Bee

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

We see lightning before we hear thunder because light travels much faster than sound. Light moves at approximately 299,792 kilometers per second, while sound travels at about 343 meters per second in air.

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

We see lightning before we hear thunder because light travels much faster than sound. Light moves at approximately 299,792 kilometers per second, while sound travels at about 343 meters per second in air.

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?

• 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

We see lightning before we hear thunder because light travels much faster than sound. Light moves at approximately 299,792 kilometers per second, while sound travels at about 343 meters per second in air.

Complete the statement 10:15 = ___: 45

• 35

• 40

• 30

• 25

Answer explanation

We see lightning before we hear thunder because light travels much faster than sound. Light moves at approximately 299,792 kilometers per second, while sound travels at about 343 meters per second in air.

What number must be subtracted from 354 to obtain 158?

• 197

• 196

• 195

• 194

Answer explanation

We see lightning before we hear thunder because light travels much faster than sound. Light moves at approximately 299,792 kilometers per second, while sound travels at about 343 meters per second in air.

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

• 87.5

• 87

• 86.5

• 86

Answer explanation

We see lightning before we hear thunder because light travels much faster than sound. Light moves at approximately 299,792 kilometers per second, while sound travels at about 343 meters per second in air.

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

• 203 cm²

• 110.65 cm²

• 111.65 cm²

• 135.65 cm²

Answer explanation

We see lightning before we hear thunder because light travels much faster than sound. Light moves at approximately 299,792 kilometers per second, while sound travels at about 343 meters per second in air.

What is the 5% of 35?

• 1.75

• 1.35

• 17.5

• 13.5

Answer explanation

We see lightning before we hear thunder because light travels much faster than sound. Light moves at approximately 299,792 kilometers per second, while sound travels at about 343 meters per second in air.

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

The triangle with sides 3 cm, 4 cm, and 5 cm is a right triangle because it satisfies the Pythagorean theorem: 3² + 4² = 5² (9 + 16 = 25). Thus, the correct answer is 'Right'.

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

To find the volume of a box, use the formula: Volume = length × width × height. Here, Volume = 5 cm × 3 cm × 2 cm = 30 cm³. However, the correct dimensions should yield 20 cm³, indicating a possible error in the question.