properties
What is our main source of light
The sun.
How do you know a liquid has gone through chemical changes?
During a chemical reaction, one or more substances are changed into new substances.
How do you know something has potential energy?
If it is positioned at a height above (or below) the zero height.
What is the relationship between mass and gravity?
The more mass something has the more gravity the earth will pull it to itself.
what is gravity?
the force that attracts a body toward the center of the earth, or toward any other physical body having mass.
What are the main colors of the light spectrum?
ROY-G-BIV.
How do you know something has gone through physical changes?
If the appearance has changed like the color or anything else you can see has changed.
How do you know something has kinetic energy?
If an object is moving, then it has kinetic energy.
Relationship between speed and kinetic energy?
When something has more speed the more kinetic energy it has.
where does gravitational/magnetic force originate from and why does all matter get pulled by gravity?
Gravity and magnetism are not the same thing. In fact, they are completely separate forces. Gravity is a force that acts between any two objects with mass
What are the properties of light?
Reflection,refraction,absorption.
is copper forming on The Statues Of Liberty a physical or chemical change?
Chemical change.
When does an object have more potential energy?
When at a higher altitude.
What is the relationship between potential and kinetic energy?
potential energy transforms into kinetic energy, and kinetic energy converts into potential energy, and then back again.
Since gravity is unlimited, can we use it as an infinite energy source?
No, gravity can not be used as an infinite energy source. In fact, strictly speaking, gravity itself can not be used as an energy source at all.
can light bend around corners
yes.
Why is mass conserved in chemical reactions?
Mass is not conserved in chemical reactions.
what makes heat rise?
Heat does not rise, hot air does (usually). Heat can spread out in all directions.
Can momentum be hidden to human eyes like how kinetic energy can be hidden as heat?
Yes and no. In a regular mechanical system with macroscopic parts, momentum can not be "hidden" to human eyes.
The gravity of an object depends on its?
a. momentum
b.weight
c.volume
d.mass
d.mass
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
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 length
b. it get shorter
Potential energy is the energy an object has due to its...?
position
When does the breaking of chemical bonds release energy?
The breaking of chemical bonds never releases energy to the external environment.
Which of the following natural phenomenon occurs on the earth due to the gravity of moon?
a.earthquakes
b.floods
c.ocean tides
d.solar energy
c.ocean tides