Earth & Space Science
What is the name of the theory that explains how continents move over time?
Plate tectonics theory
What is the smallest particle of an element?
Atom
Gravity
Mutualism
What part of the cell contains the genetic material (DNA)?
Nucleus
True or False: Bananas are berries.
True - it develops from a single flower with a single ovary, and it has a soft skin and fleshy middle
Which layer of the Earth is liquid?
Outer core
Which gas makes up most of Earth’s atmosphere?
Nitrogen (~78%)
Name one simple machine.
Lever, pulley, inclined plane, wedge, screw, or wheel & axle
Which organ in the human body pumps blood?
Heart
How many bones are in an adult human body?
206
What is the main cause of Earth’s seasons?
Tilt of the Earth's axis
What type of reaction occurs when a fuel reacts with oxygen to release energy?
Combustion reaction
If an object’s mass is 5 kg and gravity is 9.8 m/s², what is its weight in newtons?
49 N
What is the function of the alveoli in the lungs?
Gas exchange (oxygen in, carbon dioxide out)
Which planet has the most moons?
Saturn
What type of plate boundary causes mid-ocean ridges?
Divergent boundary
What pH value indicates a neutral solution?
pH 7
Name the three Newton’s Laws of Motion in order.
1st: Inertia -an object will remain at rest until acted upon by a force
2nd: F=ma,
3rd: Equal and opposite reactions
Which process do plants use to make their own food?
Photosynthesis
The fastest land animal is the cheetah. What is the fastest marine animal?
Sailfish
Name two types of evidence scientists use to study past climates.
Ice cores, tree rings, fossil pollen, sediment cores, historical records (any 2)
Write the balanced chemical equation for photosynthesis.
6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂
A car accelerates from 0 to 20 m/s in 4 seconds. What is its acceleration?
5 m/s²
Explain how the circulatory and respiratory systems work together to deliver oxygen to cells.
Oxygen enters lungs → diffuses into blood → transported by circulatory system → delivered to cells for respiration
What element was named after the planet Uranus?
Uranium