Brainscape's Knowledge GenomeTM

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


See full index

Science > Basic Definitions > Flashcards

Basic Definitions Flashcards

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

What is: a hypothesis

A

The possible explanation of an observation

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

What is: the SI unit for time is :

A

Seconds

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

What is: the SI unit for mass

A

Kilograms

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

What is: the SI unit for length

A

Metres

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

What is the definition of: length

A

The distance between two points

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

What is the definition of: mass

A

The amount of matter an object contains

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

What is the definition of: area

A

The amount of surface that covers an object

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

What is the formula for calculating the area of a square?

A

Pi R squared

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

What is the definition of: volume

A

How much space/substance an object takes up

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

What is the error of meniscus?

A

Is when you read a liquid measurement and the liquid has curved so you read it wrong

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

How to avoid the error of meniscus?

A

Always read the bottom of the meniscus at eye level for any liquid

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

What is the definition of: temperature?

A

The measure of how hot or cold an object is

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

What is the definition of: matter

A

Anything that occupies space and has mass

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

What are the properties of solids?

A

-definite shape
- definite shape
-does not flow

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

What are the properties of liquid?

A
  • no definite shape
  • definite volume
    -does flow
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What are the properties of gas?

A

-no definite shape
-no definite volume
-does flow

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

What is the definition of: melting point

A

The temperature at which a solid changes to a liquid

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

What is the definition of: evaporation

A

The changing of a liquid to a gas at the SURFACE of a liquid

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

What is the definition of: boiling

A

The changing of a liquid to a gas throughout the liquid

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

What is the definition of a cell

A

Cells are the smallest working unit in a living organism

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

What is the definition of: a cell organelle

A

The individual parts of a cell

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

What is an eyepiece?

A

To magnify and view the specimen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

What is the focus wheel?

A

To roughly focus the image of the specimen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

What is the stage?

A

To hold the specimen ( glass slide )

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

What is the course focus wheel ?

A

To focus the specimen roughly

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

What is the : Objective lens?

A

To magnify the specimen

27
Q

What is the light?

A

To see the specimen?

28
Q

What are the seven characteristics of life?

A
  • Nutrition
  • Movement
  • Respiration
  • Reproduction
  • Response
  • Growth
  • Excretion
29
Q

What is the shape of a plant cell

A

Cuboid

30
Q

What is the shape of an animal cell?

A

An oval

31
Q

Name 6 safety rules in a lab

A
  • Wear safety goggles
    -Don’t mess around with chemicals
    -Follow instructions carefully
  • No eating and drinking in the lab
  • Handle all equipment carefully
32
Q

What is an experiment?

A

a scientific procedure undertaken to make a discovery, test a hypothesis, or demonstrate a known fact.

33
Q

What is a trundle wheel?

A

The trundle wheel is made up of a wheel (usually with the circumference of one metre), a handle which is attached to the axle of the wheel, and a device which “clicks” every time the wheel makes one complete turn.

34
Q

What is an opisometer?

A

Opisometers are used to measure the length of curved lines.

35
Q

What is a vernier callipers?

A

This caliper can measure the outside diameter of an object (outside vernier), the inside diameter of a hole (inside caliper), or the depth of a hole (depth probe).

36
Q

What is the definition of : sublimation

A

Sublimation is the transition of a substance directly from a solid state to a gas state

37
Q

What is the definition of condensation?

A

Condensation is the process of gaseous water (water vapor) turning into liquid water

38
Q

What is the definition of diffusion?

A

the natural spreading-out of molecules in a liquid or gas

39
Q

What is the definition of time ?

A

time is defined as the measure of a change in a physical quantity or a magnitude used to quantify the duration of events

40
Q

How to find the area of a rectangle?

A

Length x Width

41
Q

How to find the area of an irregular object?

A

The overflow can experiment.

42
Q

What are the units for measuring distance?

A

Kilometres, metres & centimetres

43
Q

What are the measurements for mass?

A

Kilograms, & grams

44
Q

What are the units for measuring mass?

A

Grams, Kilograms and tonnes

45
Q

What are the units for volume?

A

Cubic meters

46
Q

What is a dependent variable?

A

A dependent variable is what you measure in the experiment and what is affected during the experiment.

47
Q

What is an independent variable?

A

It is a variable that stands alone and isn’t changed by the other variables you are trying to measure. For example, someone’s age might be an independent variable.

48
Q

Independent vs dependant variables

A

An independent variable is the variable that is changed or controlled in a scientific experiment to test the effects on the dependent variable. A dependent variable is the variable being tested and measured in a scientific experiment.

49
Q

What is the zero error?

A

Any indication that a measuring system gives a false reading when the true value of a measured quantity is zero,
eg the needle on an ammeter failing to return to zero when no current flows. A zero error may result in a systematic uncertainty.

50
Q

How to find the mass of liquid?

A

To mass the fluid, weigh it in a container, pour it out, weigh the empty container, and subtract the mass of the empty container from the full container.

51
Q

How to find the mass of a solid?

A

If the density of solid is known, its mass can be determined by multiplying density with volume.

52
Q

How to find the volume of a regular solid?

A

Length X width X height

53
Q

How to find the volume of an irregular solid?

A

Overflow can experiment

54
Q

How to find the volume of a liquid?

A

To calculate a liquid volume, divide the mass of the liquid by the density of the liquid.

55
Q

What is the definition of: the scientific method?

A

A series of logical steps undertaken by a scientist to carry out an experiment fairly

56
Q

What is the definition of:
a variable?

A

Something that can be changed

57
Q

What is the definition of: nucleus

A

Control center . Made up of chromosomes which contain DNA.

58
Q

What is the definition of: a mitochondria

A

Makes energy

59
Q

What is the definition of the particle theory?

A

All matter is made up of tiny particles called atoms

60
Q

What is the definition of a tissue?

A

A group of cells working together to carry out a function.

61
Q

What is the definition of an organ?

A

A group of tissues working together to carry out a function

62
Q

What is the definition of a system?

A

A group of organs working together to carry out a function

63
Q

What is a microscope?

A

A microscope is a device used to magnify biological specimens

Science (15 decks)

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