Digestive system
What is the long tube that connects your mouth to your stomach, helping food travel down?
Oesophagus
What is the ultimate source of energy that powers almost every food chain on Earth?
The Sun
What kind of energy allows us to see the world around us and comes from lightbulbs, candles, and the sun?
Light energy
Sound is created when an object moves back and forth very quickly. What is this quick movement called?
Vibration
Which state of matter keeps its own shape and has fixed volume?
Solid
Which organ mixes food with special juices to break it down into a soupy liquid?
Stomach
What do we call an animal that only eats plants, like a rabbit or a deer?
Herbivore (or primary consumer)
What type of energy is created by the movement of tiny particles, which we feel as warmth?
Thermal or heat energy
What do we call how loud or soft a sound is?
Volume
What state of matter takes the shape of whatever container you pour it into and has fixed volume?
Liquid
In which long, coiled organ does the body absorb most of the nutrients from the food we eat?
Small intestine
What is the scientific word for green plants because they make, or produce, their own food?
Producers
What form of energy flows through wires to power your computer, TV, and video games?
Electrical energy (or electricity)
What is the word for how high or low a sound is, like a squeaky mouse versus a growling bear?
Pitch
What state of matter spreads out to completely fill up any container it is put in, and has no fixed volume or shape?
Gas
What do we call the watery liquid in your mouth that helps wet food so it is easier to swallow?
Saliva (or spit)
If an animal hunts and eats another animal for food, what is the animal being hunted called?
Prey
What do we call the energy that is stored inside a battery or the food we eat, waiting to be used?
Chemical energy
Through which state of matter does sound travel the fastest: solid, liquid, or gas?
Solid
What is the scientific name for the process when a liquid turns into a gas, like a puddle drying up in the sun?
Evaporation
What is the main job of the large intestine before the leftover waste leaves the body?
To absorb water
What group of living things, like mushrooms and bacteria, breaks down dead plants and animals to return nutrients to the soil?
Decomposers
This is the scientific rule stating that energy cannot be created or destroyed, it can only change from one form to another.
The Law of Conservation of Energy
What is an echo?
A sound wave that hits a hard surface and bounces back to your ears
What is the word for when a gas cools down and changes back into a liquid, like water droplets forming on a cold glass?
Condensation