Things That Change
(Unit 3, Yes/No)
Q: Does the adult human body have more than 300 bones?
No, it has 206 bones.
(Unit 2, Yes/No)
Q: Can the rafflesia truly be described as the largest flower found on Earth?
Yes, it is the world’s largest flower.
(Unit 9)
Q: Who were already living in America before European settlers such as the Pilgrims arrived?
The Native Americans, also called American Indians.
⚡ Bonus: Lightning Double!
(Unit 5)
Q: How fast must the winds blow for a storm to be called a hurricane?
119 km per hour or more.
(Unit 1, Yes/No)
Q: After being touched, does the Mimosa pudica reopen its leaves within minutes?
Yes, its leaves reopen after closing.
(Unit 7)
Q: What causes day and night on Earth?
Earth’s rotation every 24 hours causes day and night.
(Unit 12)
Q: Which satellite-based system prevents people from getting lost while traveling today?
GPS, or the Global Positioning System.
(Unit 12)
Q: How does the text describe robotic vacuum cleaners in order to make them sound almost alive?
They are like vacuum cleaners with a brain.
(Unit 11)
Why does a compass needle always point north no matter where you are?
Because a compass uses a magnetic needle, and it always points north.
Bonus: Swap Attack!
(Unit 9)
Q: Which ship carried the Pilgrims across the Atlantic in 1620?
The Mayflower.
(Unit 4)
Q: Why do people not need to worry about losing 50–100 hairs each day?
Because those hairs are constantly replaced by new ones.
Bonus: Lucky +100!
Every magnet has two poles. What are the scientific names for these poles?
The north-seeking pole (N pole) and the south-seeking pole (S pole).
🏴☠️ Bonus: Pirate’s Plunder!
(Unit 10)
Q: The word “N’cwala” is tied to the harvest festival. What does it literally mean in the local language?
It means “first fruit.”
(Unit 2)
Q: The titan arum rarely blooms. What makes its blooming event so unusual compared to most other flowers?
a) It blooms every night under the moonlight.
b) It may bloom only once in 10 years.
c) It changes color from red to blue while blooming.
d) It produces no smell at all when blooming.
b) It may bloom only once in 10 years.
(Unit 10)
Q: During the N’cwala festival, what special performance do the Ngoni groups present to their king?
Each group performs a warrior dance.
(Unit 5)
Q: Why is the eye of a hurricane misleading?
The eye looks calm, but it is surrounded by the dangerous eye wall with the strongest winds and rain.
(Unit 6)
Q: Why are tornadoes compared to vacuum cleaners?
Because their spinning winds suck up everything in their path, including cars and houses.
🏴☠️ Bonus: Pirate’s Plunder!
(Unit 7)
Q: How do Earth’s rotation and orbit create cycles?
Earth’s rotation makes day and night, and its orbit with a tilt causes the four seasons.
(Unit 6): Read the following sentences. One of them is NOT correct according to the text. Which one is it?
a) Tornadoes are also called twisters, and they are the most powerful winds on Earth.
b) Tornado winds can blow faster than 500 km per hour.
c) Tornadoes most often occur in Tornado Alley, a region in the United States.
d) Tornadoes usually form over warm oceans, like hurricanes.
d) Tornadoes usually form over warm oceans, like hurricanes.
(Unit 8)
Q: What is Copernicus’s heliocentric theory?
The sun is at the center of the solar system and Earth and other planets orbit around it.
(Unit 8)
Q: Why were people angry when Copernicus’s book was published?
Because it challenged their belief that Earth was the center of the universe, so they refused to accept it.
(Unit 1)
Q: Compare the morning glory and the daylily.
Both flowers bloom for only one day, but the morning glory opens early in the morning while the daylily blooms at sunrise and dies at sunset.
(Unit 12)
Q: How has technology changed travel and navigation?
Long ago, people traveled slowly by horse and maps, but today we travel quickly by cars or planes and use GPS to avoid getting lost.
(Unit 4)
Q: How does hair growth change with time and conditions?
Hair takes about seven years to reach the waist, grows faster in summer, and slows at night.
(Unit 3)
Q: How do the skeletal, muscular, and nervous systems work together to help you move?
The skeletal system helps you stand up straight and move, the muscles are attached to bones and help you move, and the nervous system sends messages through nerves and lets you move.
🎯 Bonus: One More Shot!