To attach or secure something firmly in place.
fasten
An object that produces a magnetic field and can attract or repel certain materials, such as iron or steel.
magnet
A strong, magnetic metal commonly used in construction and manufacturing, and it is found abundantly in the Earth's crust.
Relating to or produced by electricity, especially involving the flow of electric charge.
electric
Having great weight, density, or force, making it difficult to lift, carry, or move.
heavy
to bring something into existence or make something new.
create
A strong, durable metal made from iron and carbon, often used in construction and manufacturing.
steel
Physical substance that takes up space and has mass; also, a subject or topic of concern.
matter
A test or investigation done to discover something new or prove an idea.
experiment
Completely different or contrary in direction, meaning, or position.
opposite
To watch carefully in order to learn or understand something.
observe
The capacity for doing work; the physical or mental strength that allows someone or something to be active or effective.
energy
The action or process of moving or being moved.
motion
Existing in or caused by nature; not made or altered by humans.
natural
The armed forces of a country, including the army, navy, air force,
military
To make something known or show something that was hidden.
reveal
The ability to see, or the range of vision.
sight
A type of watercraft designed to travel underwater, typically used for exploration or military purposes.
submarine
To become aware of or observe something, often through careful attention.
notice
In the direction opposite to the usual or intended way; behind.
backwards
To pull or draw something toward oneself, often because of interest or force.
attract
A relationship or association between people, things, or events.
connection
A device used for slowing or stopping motion, particularly in vehicles.
brake
Used to express uncertainty or possibility.
perhaps
Equal to or comprising 50% of a whole.
half