Energy
This is the energy an object has because it is moving.
What is energy
This is the smallest unit of an element that retains the properties of that element.
What is an atom
This force pushes a rocket forward.
What is thrust
This measurement tells you how hot or cold something is.
What is temperature
This star is the main source of light and radiant energy for Earth.
What is the sun
A book resting on a high shelf has this type of stored energy because of its height.
What is gravitational energy
Two or more atoms chemically bonded together form one of these.
What is a molecule
This force from air resistance opposes an object's motion through the air.
What is drag
When most materials are heated and increase in size, this process occurs.
What is expansion
Unlike conduction and convection, this method of energy transfer can travel through empty space.
What is radiation
The sum of an object's kinetic energy and potential energy is often called this.
What is mechanical energy
These negatively charged particles occupy regions around an atom's nucleus.
What are electrons
Engineers study this field to understand how air flows around airplanes, cars, and other moving objects.
What is aerodynamics
Thermal energy naturally transfers from a warmer object to a cooler object until they reach the same temperature.
What is heat transfer?
This type of electromagnetic radiation allows your eyes to see the world around you.
What is visible light
A flashlight changes chemical energy stored in its battery into electrical energy and then light and thermal energy. This process is called this.
What is energy conversion
These are the electrons in an atom's outermost occupied energy level and are especially important in chemical bonding.
What are electrons
Engineers build this early test version of a design before producing the final product.
What is a prototype
A metal spoon is placed in hot soup. The spoon gets warmer as energy moves through the metal by this process.
What is conduction
You feel warmth from the Sun even though space between Earth and the Sun is mostly empty. This kind of radiation carries energy from the Sun to Earth.
What is electromagnetic radiation?
A student lifts a ball above the floor and then drops it. As the ball falls, this stored form of energy decreases while kinetic energy increases.
What is gravitational potential energy
In a chemical reaction, the total mass of the reactants equals the total mass of the products. This principle is called this.
What is conservation of mass
A rocket engine pushes exhaust gases backward, causing the rocket to accelerate forward. This is an example of which force acting on the rocket?
What is thrust
A scientist uses a device to measure heat gained or lost during an experiment. The scientific technique is called this.
What is calorimetry?
A black shirt and a white shirt sit in sunlight. Under similar conditions, the black shirt often gets warmer because it absorbs more of this energy.
What is radiant energy?