Chapter 6 Physical Science

Question 1

The thermal energy of an object is the average sum of the _____________ energies of all particles in the object.

Accepted Answer

kinetic

Question 2

____________ is done when a force acts of an object to move it a distance.

Accepted Answer

work

Question 3

Surrounding suburbs are typically hotter than nearby cities.

Accepted Answer

False

Question 4

Energy transformation can never be 100% efficient.

Accepted Answer

True

Question 5

A soccer ball rolling across a field...

Accepted Answer

kinetic energy

Question 6

What is the largest potential source of energy in the universe?

Accepted Answer

mass energy

Question 7

Magnetic energy and electrical energy are related.

Accepted Answer

True

Question 8

An apple hanging from a tree...

Accepted Answer

potential energy

Question 9

Nuclear process that releases energy when two or more nuclei join to form one large nuclei....

Accepted Answer

fusion

Question 10

Energy is...

Accepted Answer

all answers

Question 11

Perfect elastic collisions can occur in the real-world.

Accepted Answer

False

Question 12

Invisible radiant energy can only be produced by natural sources like stars.

Accepted Answer

False

Question 13

Momentum and energy are always conserved in all collisions.

Accepted Answer

False

Question 14

Kinetic energy is found using the equation...

Accepted Answer

1/2 m X v2

Question 15

How much mass energy could be obtained from the complete conversion of a 4.5 g piece of candy?

Accepted Answer

1,350,000 J

Question 16

How is force related to energy?

Accepted Answer

greater force creates greater energy

Question 17

Nuclear process that releases energy when one large nuclei splits into two or more nuclei....

Accepted Answer

fission

Question 18

What type of collision conserves BOTH kinetic energy and momentum?

Accepted Answer

elastic

Question 19

Energy is classified by...

Accepted Answer

how we sense it and its principal source

Question 20

Potential energy is the energy possessed by objects that are in motion.

Accepted Answer

False

Question 21

X-raying a broken bone...

Accepted Answer

radiant energy

Question 22

A car's loud alarm blaring...

Accepted Answer

acoustic energy

Question 23

Which energy transformation is primarily involved in the urban heat island effect?

Accepted Answer

radiant to thermal energy

Question 24

The amount of usable energy is always increasing.

Accepted Answer

False

Question 25

_____________ is the loss of gain of thermal energy by a system.

Accepted Answer

heat

Question 26

Type of radiant energy...

Accepted Answer

all answer choices

Question 27

_______________ is the ability to do work

Accepted Answer

energy

Question 28

What is another name for the first law of thermodynamics?

Accepted Answer

the law of the conservation of energy

Question 29

A shock from walking across carpet...

Accepted Answer

electrical energy

Question 30

Electrical devices convert electrical energy into other forms of energy.

Accepted Answer

True

Question 31

A compass pointing north...

Accepted Answer

magnetic energy

Question 32

What is the kinetic energy of a car with a mass of 2500 kg that moves at 13.4 m/s?

Accepted Answer

224,450 J

Question 33

Possess magnetic energy...

Accepted Answer

all answer choices

Question 34

Radiant energy involves the interaction of _______________ and ________________ energies.

Accepted Answer

electrical, magnetic

Question 35

Which of the following has kinetic energy?

Accepted Answer

a ball rolling down a hill

Question 36

If a bomb with a mass of 248 kg is dropped from a height of 1.6 km, what is its potential energy?

Accepted Answer

3900 J

Question 37

The force doing work in electrical energy is a contact force.

Accepted Answer

False

Question 38

Why is energy conserved in processes that are less than 100% efficient?

Accepted Answer

total energy of the system does not change, only energy form

Question 39

A fire burning in a fireplace...

Accepted Answer

chemcial energy

Question 40

Kinetic energy is the energy of _____________

Accepted Answer

motion

Question 41

Electrical energy is a field force that does work on its...

Accepted Answer

surroundings

Question 42

The zero reference point for elastic potential energy is measured from an object's relaxed position.

Accepted Answer

True

Question 43

A hot cup of coffee...

Accepted Answer

thermal energy

Question 44

The source of the Sun's energy...

Accepted Answer

nuclear energy

Chapter 6 Physical Science

Questions 44

Chapter 6 Physical Science

Questions 44