Energy Basics
What is Energy?
The ability to do work or make things move.
What is potential energy.
Stored energy that an object has due to its position or condition.
Which body system provides oxygen to your muscles?
The respiratory system.
What does it mean to transfer energy?
To move energy from one object or system to another.
What do we call energy that comes from moving air?
Wind energy.
What happens when energy is used?
It is transformed or transferred, not lost.
What is kinetic energy?
The energy of motion.
Which system delivers oxygen and nutrients through the body?
The circulatory system.
A person riding a bike shows what energy transfer in everyday life.
A person pedaling a bike (chemical → mechanical).
What is renewable energy?
Energy that comes from natural sources that don’t run out.
What kind of energy do our muscles use to move our bodies?
Chemical energy.
When you stretch a rubber band, what kind of energy increases?
Potential Energy.
Why does your heart beat faster during exercise?
To deliver more oxygen and energy to your muscles.
When you touch a warm cup, what type of energy transfer happens?
Thermal energy transfer (heat).
Why do people eat food before playing sports?
To get chemical energy for movement.
Name two ways humans gets energy.
Eating food and using stored fat (chemical energy).
When you release that rubber band, what kind of energy does it have?
What type of energy does your body store from food?
Chemical Energy.
What happens to energy when you push a swing?
Energy is transferred from your body to the swing.
Name a situation where potential and kinetic energy both happen.
A roller coaster going up and down a hill.
What is the main source of energy for almost all living things.
The Sun.
A person at the top of a hill has 100 J of potential energy. If they roll down and have 100 J of kinetic energy at the bottom, what happened to their potential energy?
It was transformed into kinetic energy.
When you run, what is the sequence of energy transfer from food to motion?
Chemical → Mechanical (kinetic) energy.
Describe how a flashlight transforms and transfers energy.
Chemical (battery) → Electrical → Light + Thermal energy.
How does understanding human energy help scientists design technology?
It helps them create devices and systems that mimic how humans get and use energy efficiently.