Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Science 2 > The Power Of Energy > Flashcards

The Power Of Energy Flashcards

You may prefer our related Brainscape-certified flashcards:
Biology 101 flashcards
1
Q

What is energy

A

The capacity to do work or to produce change

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is energy expressed in

A

Joules

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

If an object weight 1 N how many grams does it way on earth

A

100 grams

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is formula to figure out how many joules of energy u need to do something

A

Joules = amount of Newton’s X how many meters high u wanna lift it

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What is temperature

A

The degree if agitation in a substances’ molecule or atoms

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is thermal energy

A

The energy that comes from the random motion of particles in a substance

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What are the factors affecting thermal energy

A

Higher the tempo of a substance, the faster the particles are moving, high er the thermal energy.
The more particles in a substance, the more collisions occurring, the more thermal energy

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What is radiant energy

A

Kind of energy that is contained in and transported by electromagnetic waves

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What are electro magnetic waves

A

Can transport energy from one place to another

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

The amount of energy is something depends on what?

A

On the wave length and the amount of radiation.

The shorter the wave length the more energy something has

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What is the electro magnetic spectrum

A

Radio waves —> micro waves —> infrared —> visible light —> ultra violet —> X-rays —> gamma rays

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

How can u calculate the wave length

A

Distance from one crest to another or trough to trough

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What is mechanical energy

A

Energy that results from the speed of an object, it’s mass and its surroundings

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What is an example of mechanical energy increasing with speed

A

The damage caused in a car crash going 100 km and hour will be much greater than if the car was going 20 km and hour

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What is an example of the more mass of an object, the greater the mechanical energy

A

A car crash with a truck does more damage than with a small car

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What is an example of relationship with its surroundings

A

Object higher up has more energy than objects lower to the ground

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

what is chemical energy

A

energy stored in bonds of a molecule. to get energy out the bond has to be broken. the amount of energy depends on the strength of the bond and energy has to be triggered

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

what is an example of chemical energy

A
  • operation of a car
  • photosynthesis
  • cellular respiration
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

what are examples of mechanical energy

A
  • creation of a crater by an asteroid
  • the spinning of a windmill wind
  • powering of a hydroelectric power station by a waterfall
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

what does energy transformation mean

A

changing of energy from one form to another

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

what energy transformation does turning on a lamp go through

A

electrical —-> thermal/ radiant

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

what energy transformation does photosynthesis go trough

A

radian ——> chemical

23
Q

what energy transformation does eating/ digesting go through

A

chemical ——-> mechanical

24
Q

what does energy transfer mean

A

movement of energy from one place to another

25
Q

what is an example of an energy transfer

A

burning log transfers heat from itself to the room

26
Q

what is a physical change

A

does not affect the nature or the characteristic properties of matter

27
Q

what are the three types of physical changes

A
  1. changes of state
  2. dissolution
  3. deformation
28
Q

what is a phase change

A

the transformation from one state to another. requires a change in thermal energy

29
Q

what happens when we heat up water

A

thermal energy is transferred from the heating plate to the water. speeding up the liquid particles which then turn into a gas. energy is absorbed

30
Q

what happens when we freeze water

A

the water transfers its heat to the cold, the freezer lowers the temp of the water. energy is given off.

31
Q

what happens when we sweat

A

sweat absorbs heat from our skin until it has enough energy to evaporate.

32
Q

what is dissolution

A

when a solution is made forming a solute that is insoluble

33
Q

what is an exothermic reaction

A

when the solutes release energy, increasing the temperature

34
Q

what is an endothermic reaction

A

when the solute absorbs energy, decreasing the temperature

35
Q

What is deformation

A

Changing the shape of a material with an energy transfer

36
Q

What is an example of a reversible deformation

A

Trampoline going up and down

37
Q

What is an example of a permanent deformation

A

Smashing a calculator

38
Q

What is a chemical change

A

Changes the nature and characteristic properties of matter. Produces one or more new substances

39
Q

What is the law of conservation of mass

A

Nothing is lost or created. There are the same numbers of atoms on each side

40
Q

What are the 4 chemical reactions

A

Synthesis
Oxidation
Decomposition
Precipitation

41
Q

What synthesis

A

Formation of a complex molecule from atoms

42
Q

What is decomposition

A

Transformation of complex molecule into smaller molecules or atoms

43
Q

What is oxidation

A

Chemical reaction involving oxygen or a substance that has similar properties to oxygen

44
Q

What is precipitation

A

Formation of a solid that is less soluble , or not soluble, following the mixing of two solutions.

45
Q

Does photosynthesis absorb or release energy

A

It absorbs energy.

46
Q

Does decomposition reals or absorb energy

A

The release of energy

47
Q

Does oxidation release or absorb energy

A

Release

48
Q

What are example of oxidation

A

Combustion

Cellular respiration

49
Q

What happens when a reactant is energy

A

It absorbs energy

50
Q

What happens if a product is energy

A

It realease energy

51
Q

What is conduction

A

What transfers through an object. Heat flows through

52
Q

What is convection

A

What transfers through a fluid, such as air. The air carries the heat

53
Q

What is radiation

A

Transfers heat through waves

Science 2 (22 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions