Unit 1
He was from a family of merchants, studied many topics, including astronomy, mathematics, medicine, law, and economics.
Nicolaus Copernicus.
Imagine a wooden block sitting on a table. Touch the block on its side with your finger. Push hard enough and the block moves.
Contact Force.
What is Ferromagnetic metal?
A metal that a magnet can attract, such as iron, cobalt, or nickel
What was the first artificial object to reach Earth's orbit?
Sputnik 1.
What role does gravity have in space?
Gravity is a force that governs the motion of galaxies and other objects in the universe. Gravity helps keep planets in orbit around the Sun. Gravity also holds the stars together to form galaxies.
What model did Copernicus make?
The model of the solar system.
What is Friction?
Friction is often caused by the surface roughness between two solid objects.
The force applied by a magnet.
Magnetic Force.
What artifical object carried Yuri Gagarin and did a one successful orbit around the Earth?
Vostok 1
The moon has most of its shape brightly illuminated when seen from Earth.
Waning Gibbous.
Doubling the force will double the stretch of spring. Who discovered this law?
Robert Hooke
A flying object will continually hit air particles. These hits will cause the object to slow down.
Air Friction.
An instrument that can measure the amount of electric charge on an object.
electroscope
The quantity of matter in an object.
Mass.
The regular rise and fall in the level of the oceans
Tides.
Who discovered the Three Laws of Motion?
Isaac Newton.
The force that is not canceled out by any other forces
Unbalanced force.
What is kinetic energy?
A form of energy related to an object’s mass and speed
If person adds a spoonful of salt to a glass of water and stirs. The salt dissolves into the water. The act of dissolving is a physical process. What substance is this called?
Solubility
What degree does earth tilt on its axis?
Who showed that the human body used electric signals to control muscles?
Luigi Galvani.
The tendency of an object with mass to resist a change in motion
Inertia.
A form of energy relating to an object’s position or arrangement
Potential energy
A state of matter made up of charged particles that have an undefined volume and shape?
Plasma.
What is the result of the interactions between the Sun and the Earth?
Seasons.