The invisible area where a magnet can push or pull another object.
Magnetic field
This is the galaxy our solar system calls home.
Milky Way Galaxy
When you touch something cold, this flows from your hand to the object.
Thermal Energy (or heat energy)
The sun provides energy that drives many processes on Earth's surface. This inner source also contributes heat for processes underground.
Earth's interior or core
When baking a cake, the ingredients turn into something new with different properties. This is an example of this kind of process.
Chemical Reaction
This force holds the solar system together.
Gravity
The sun appears to rise in the east and set in the west. This daily cycle is caused by this motion.
Earth's rotation (spinning on axis)
This measurement tells you the average kinetic energy of particles in a substance.
Temperature
When the sun heats up water in lakes and oceans, this process happens.
Evaporation
In a chemical reaction, these stay the same, even though they are rearranged.
Atoms
If you slide a book across a table, this force slows it down.
Friction
These smaller space companions travel around planets.
Moons
Even though a pot of water and a cup of water are the same temperature, the pot has more of this.
Thermal energy
The reason rivers flow downhill and rain falls toward the ground is this invisible force.
Gravity
Rust forming on iron is an example of this type of transformation.
Chemical change
This part of a magnet is where the force is strongest.
Poles
If you look at the night sky for several hours, stars seem to move. This movement is not real—it’s caused by this.
Earth's spinning axis (rotation)
This term describes the energy moving from a hot object to a cooler one.
Heat transfer
When water vapor cools in the atmosphere and turns into droplets, this is happening.
This evidence—like bubbling, temperature change, or color change—can help you identify this kind of reaction.
Chemical reaction
Gravity between the moon and Earth causes this rise and fall of ocean water.
Tides
What two factors cause us to experience seasons on Earth?
The tilt of the axis and the orbit around the sun.
In science, “heat” doesn’t mean hotness—it refers specifically to this.
Energy moving from one object to another due to a temperature difference
Water exits plants through small pores in their leaves in this process.
Transpiration
New substances formed during a chemical reaction are different from the starting materials, which are known by this name.
Reactants