Energy
How do you know something has kinetic energy?
If an object is moving
Where does gravitational/magnetic force originate from and why does all matter get pulled by gravity?
Gravity and magnetism are not the same things. In fact, they are completely separate forces. Gravity is a force that acts between any two objects with mass
How do you know something has gone through physical changes?
the appearance has changed
What are the main colors of the light spectrum?
ROY-G-BIV
relationship between speed and kinetic energy?
When something has more speed the more kinetic energy it has
How do you know something has potential energy?
If it is positioned at a height above or below the zero point
since gravity is unlimited, can we use it as an infinite energy source?
No
How do you know a liquid has gone through chemical changes?
substances are changed into a new substance
What is our main source of light?
The sun
What is the relationship between mass and gravity?
The more mass something has the more gravity the earth will pull it to itself
What makes heat rise?
Heat does not rise
What is gravity
the force that attracts a body toward the center of the earth
Why is mass conserved in chemical reactions?
mass is not conserved in chemical reactions
Can light bend around corners
yes
Can momentum be hidden to human eyes like how kinetic energy can be hidden as heat?
Yes and No
potential energy is the energy an object has due to its?
which of the following natural phenomenon occurs on the earth due to the gravity of the moon?
A. earthquakes
B. floods
C. ocean tides
D. solar energy
C. ocean tides
is copper forming on the statues of liberty a physical or chemical change?
chemical change
What are the properties of light?
Reflection, refraction, and absorption
What is the relationship between potential and kinetic energy?
potential energy transforms into kinetic and kinetic energy converts into potential energy and it repeats
When does an object have more potential energy?
When at a higher altitude
The gravity of an object depends on what?
A. momentum
B. weight
C. volume
D. mass
D. mass
What happens to a bar of steel when it is cooled down?
A. it gets longer
B. it gets shorter
C. it stays the same
B. it gets shorter
About how fast is light?
A: 1000 feet per second
B: 1000 miles per second
C: 10,000 miles per second
D: 186,000 miles per second
D. 186,000 miles per second
When does the breaking of chemical bonds release energy?
they never release energy to the external enviroment