What type of blood cells help fight infections?
What type of energy is stored in a stretched rubber band?
elastic potential energy
What is the simplest type of substance, consisting of only one type of atom?
element
Which planet is known as the Red Planet?
What is the largest organ in the human body?
Skin
The green pigment in plants that absorbs sunlight for photosynthesis.
Chlorophyll
What is the type of circuit where electricity has only one path to flow?
series
The pH value of a neutral substance like pure water.
7
The three main types of rock
igneous, sedimentary, and metamorphic
The name of the gas that makes up most of the air we breathe.
Nitrogen
What is part of the cell that controls its activities and contains genetic material.
Nucleus
The effect of light bouncing off a flat smooth surface
reflection
What gas turns limewater cloudy?
carbon dioxide
What type of rock is formed from cooled lava?
igneous rock
What is the hardest natural substance on Earth?
diamond
The process by which organisms break down glucose to release energy.
Respiration
What happens to an object's shadow when the light source moves closer?
It gets bigger
What is the chemical symbol for helium
What do we call a large group of stars, dust, and gas held together by gravity?
A galaxy
Who painted the Mona Lisa?
Leonardo da Vinci
What is the tube that carries air that has been breathed in from the upper end of the throat to the lungs?
windpipe/trachea
What is the unit used to measure energy?
joule
The scientific term for a solid turning directly into a gas
sublimation
What is the name of the imaginary line that runs around the middle of the Earth?
The equator
Which mythical creature is celebrated as Scotland’s national animal?
Unicorn