SCIENCE MIX
What is the chemical symbol for gold?
Au
What is the largest continent in the world?
Asia
Who was the first President of the United States?
George Washington
Solve: 4(3x − 2) = 2(5x + 6)
12x − 8 = 10x + 12
2x = 20
x = 10
How many continents are there?
7
What planet is known as the Red Planet?
Mars
Which ocean is the largest?
Pacific ocean
In which country did the Renaissance begin?
Italy
A number is decreased by 15 and the result is 3 times the number. Find the number.
Let x be the number.
x − 15 = 3x
−15 = 2x
x = −7.5
What gas do humans need to breathe to survive?
Oxygen
What type of energy is stored in food?
Chemical energy
Which country has the largest population in the world?
India
What wall was built to divide a German city during the Cold War?
Berlin Wall
Two numbers have a sum of 50. One number is 6 more than twice the other. What are the two numbers?
Let smaller number = x
Larger number = 2x + 6
x + (2x + 6) = 50
3x + 6 = 50
3x = 44
x = 14.67
Larger number = 2(14.67) + 6
= 29.33 + 6
= 35.33
Numbers: 14.67 and 35.33
What is the hardest natural substance on Earth?
Diamond
What is the powerhouse of the cell?
Mitochondria
What is the capital of South Africa?
Pretoria (administrative capital)
Accept also: Cape Town (legislative) or Bloemfontein (judicial)
What major event started in 1939?
World War II
A train travels 60 km in 45 minutes. At this same speed, how far will it travel in 2 hours?
45 minutes = 0.75 hours
Speed = 60 ÷ 0.75
= 80 km per hour
In 2 hours:
80 × 2 = 160 km
Answer: 160 km
How many sides does a hexagon have?
6
What law states that for every action, there is an equal and opposite reaction?
Newton’s Third Law
What is the capital of Switzerland?
Bern
Who was the English king with six wives?
Henry VIII
You have 3 switches downstairs. Only one controls a light bulb upstairs. You can go upstairs only once. How can you figure out which switch controls the bulb?
Turn on switch 1 for a few minutes.
Turn it off.
Turn on switch 2.
Go upstairs:
• If the light is on → switch 2 controls it.
• If the light is off but warm → switch 1 controls it.
• If the light is off and cold → switch 3 controls it.
What was the first known civilization in human history, and where was it located?
The Sumerian civilization, located in Mesopotamia (modern-day Iraq).