science pt 2

Question 1

Energy can not be transferred from place to place.

Answer 1

False

Question 2

You can observe the effects of energy.

Answer 2

True

Question 3

You do work any time you exert a force on an object that causes the object to change its motion in the opposite direction to which you exert the force.

Answer 3

_False____

Question 4

When you do work on an object, some of your energy is transferred to that object.

Answer 4

True

Question 5

All forms of energy can be transformed into other forms of energy,
At its highest point, a pendulum has no movement and therefore no potential energy.

Answer 5

True_____

Question 6

At its highest point, a pendulum has no movement and therefore no potential energy.

Answer 6

false

Question 7

When a pendulum swings down, potential energy declines as the kinetic energy decreases.
.

Answer 7

_True_____

Question 8

As a pendulum swings upward, it loses kinetic energy and gains potential energy

Answer 8

_True_____

Question 9

A pendulum’s kinetic energy and speed are greatest at the bottom, or midpoint, of the swing.

Answer 9

true

Question 10

Energy transfer occurs when one form of energy changes into another.

Answer 10

false

Question 11

Energy transformation takes place when energy moves from one object to another.

Answer 11

False

Question 12

The law of conservation of energy states that energy can not be created or destroyed, it can only change form.

Answer 12

True_____

Question 13

The SI unit for temperature is the joule.

Answer 13

false

Question 14

Heat transfers from the warmer object away from the cooler object.

Answer 14

false

Question 15

Heating a substance can cause its particles to move more quickly.

Answer 15

True_____

Question 16

Kelvin is the official SI unit of temperature.

Answer 16

True

Question 17

During a change of state, the thermal energy of a substance changes, but its temperature stays the same.

Answer 17

True

Question 18

A material with a low specific heat can absorb a great deal of energy without a great change in temperature.

Answer 18

False_____

Question 19

As matter heats, it usually decreases in volume.

Answer 19

False

Question 20

It takes _________ for motion to occur.

Answer 20

_energy_____

Question 21

An object is in __________ if its position changes relative to another object

Answer 21

_motion______

Question 22

In order for there to be work there must be ________.

Answer 22

_motion__________

Question 23

The ability to do work or cause change is called ___________.

Answer 23

_energy_________

Question 24

Gravitational potential energy is affected by the object’s weight and the objects_____________

Answer 24

Height

Question 25

The faster an object moves, the ____________- kinetic energy it has..

Answer 25

_more__________

Question 26

Kinetic energy ____________ as mass increases.

Answer 26

_increases_______

Question 27

The amount of _____________ can change as the position or distance of objects change.

Answer 27

_potential energy___

Question 28

object's __________ position, how high above the ground it is.

Answer 28

_verticle_______

Question 29

When comparing fusion and fission, _________ releases more energy.

Answer 29

_fusion________

Question 30

The total kinetic and potential energy of all the particles in an object is called ____________.

Answer 30

thermal energy________

Question 31

_________ is the energy that is transferred from a warmer object to a cooler object.

Answer 31

heat

Question 32

_______ is a measure of the average kinetic energy of the particles in a substance.

Answer 32

_Temperature_____

Question 33

_______________ is the transfer of energy from one particle of matter to another within an object or between two objects that are in direct contact.

Answer 33

Conduction______

Question 34

The type of heat transfer that occurs through movement of fluids is _____________-.

Answer 34

_convection_____

Question 35

The type of energy transfer by electromagnetic waves is called ______________.

Answer 35

_radiation________

Question 36

__________________ is the only type of energy transfer that does not require matter.

Answer 36

_Radiation

Question 37

The amount of energy required to raise the temperature of one kilogram of material by one degree kelvin is called its ______________.

Answer 37

_specific heat________

Question 38

The expansion of matter when it is heated is known as ________________.

Answer 38

_thermal expansion______

Question 39

Is work done when you hold a heavy object for a long time? Why or why not?

Answer 39

1.It takes force to hold an object. 2. No work is done 3. if the object does not move a distance.

Question 41

What does it mean to say that energy is conserved in an energy transformation?

Answer 41

The total energy before transformation is the same after transformation.