survey jn physics exam one

The property of mass is a measure of how heavy it is, t or f

False

The density of a 100g piece of iron is twice as great as the density of a 50g piece of iron, t or f

False

A tentative scientific explanation which may or may not be rejected upon further experimentation

Hypothesis

The SI standard unit for mass is the

Kilogram

Mass is measure using a

Balance

.000596 in connotation is

5.96 × 10^-4

Sci notation

8.40 × 10^18, move decimal 18 places to the right

Misleading people into believing that something has scientific validity when it does not

Pseudo science

Density is the ratio of mass to

Volume

the difference between a scientific law and scientific theory is that law has been proven, while a theory has not

False

When you roll a ball across the floor it comes to a stop because you are no longer entering a force on it, t or f

False

Ignoring air resistance the velocity of a falling object

Is constantly increasing

Difference between speed and velocity, measure of velocity must include

Direction

The tendency of a moving object to remain in unchanging motion in the absence of an unbalanced force is called

Inertia

What is not a unit of acceleration

m/s

A straight line distance covered during a certain amount of time describes an objects

Speed

astronauts appear weightless on the ISS because

The astronauts and ISS are falling at the same rate

A car is traveling along the interstate at 80mph the tires rolling along the road that keep the car moving is an example of which of newtons laws

Third

what affects the gravitation attraction between two object

Mass, distance between objects

While sitting in car a friend is pushing you, even tho friend is pushing with constant force you noticed that speed was increasing, which of newtons laws is this

second

Energy object has because of position is called ___ energy

potential

After the US which country uses most energy per capita

Australia

The watt is a unit of

Power

In most power plants producing electricity ___ is used to turn the turbine

Steam

Roughly what fraction of the worlds energy needs is supplied by coal

30%

A car would be considered a ____ system

Open

What is a renewable energy source

Biodiesel

What is not a form a energy

Potential energy

Coal is formed from

None of the above

The force between surfaces that opposes in sliding on the other is known as

Friction

Template is a measure of the amount of heat stored in a surface, t or f

False

Which of the following is higher in energy calorie or joule?

Calorie

If you hold one end of iron rod and put other end in fire, eventually you will feel your end warming up, the heat is traveling through the rod by a mechanism known as

Conduction

The heat added to a substance that causes a phase change but no change in temperature is called

Latent heat

Which law of thermodynamics predicts the end of the universe

Second law

Convection best takes place in a

Fluid

Radiation is the only form of energy that can travel through a

Vacuum

The process by which solid goes directly to a gas without becoming a liquid is called

Sublimation

When water vapor condenses to a liquid

It releases energy to the surroundings

Relative humidity formula

(Actual water vapor/max water vapor)*100