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Grade 6-8 Science > Basic Science Overview > Flashcards

Basic Science Overview Flashcards

1
Q

What is Science?

A

Science is the process of learning about the natural world through observation and experimentation.

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2
Q

What is a controlled experiment?

A

A scientific test where the people conducting it only change one variable at a time in order to isolate the results.

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3
Q

What is Astrology?

A

The study of movements & positions of stars. This is not a science.

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4
Q

What is Astronomy?

A

The study of space.

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5
Q

What is Chemistry?

A

The study of matter, its properties & how it can react and change.

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6
Q

What is a scientific claim?

A

An answer to a scientific question.

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7
Q

Why is whipping egg whites a physical change?

A

Whipping egg whites simply adds air into the egg making them foamy. They are still egg whites ( not a new substance ) so this is a physical change.

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8
Q

What is a mixture?

A

A mixture contains two or more substances that are not chemically combined.

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9
Q

How might the position of a baby alligators eyes affect its chance of survival?

A

If one alligators eyes are positioned so that it can see more than another, it may be more likely to survive beau use it can better detect predators.

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10
Q

What is a force?

A

A push or a pool that can cause the motion of an object to change. It has two important properties strength and direction.

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11
Q

What is a balanced force?

A

When two equal forces act in opposite directions the result is that the forces are balanced and there is no motion.

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12
Q

What two things do or forces have?

A

Strength and direction

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13
Q

What is a catalyst?

A

A substance that speeds up a chemical reaction.

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14
Q

What is an oxidiser?

A

A chemical that provides a lot of oxygen to help things burn.

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15
Q

If two substances are mixed and a new substance is formed, what type of changes it?

A

Chemical Change

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16
Q

What are the four main ways weathering can
happen?

A

Water, wind, freezing and gravity

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17
Q

How do bacteria make more of themselves?

A

By copying the DNA and splitting it in half.

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18
Q

What does a virus inject into a cell?

A

It injects its DNA (or RNA) into the hosts cells.

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19
Q

What is a vaccine?

A

A medicine that helps prepare the immune system to fight infection.

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20
Q

Name two ways Bacteria are helpful instead of harmful.

A

Bacteria can be used to make food like yoghurt or produce fuel for cars. Good bacteria live on your skin to prevent you from getting sick and in your stomach to help digest food.

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21
Q

Groups of cells working together are called

A

Tissues

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22
Q

Groups of organs work together to form

A

Systems

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23
Q

What is the lowest level of organisation in a multicellular organism?

A

Cells

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24
Q

Explain how our body systems work together to get oxygen into and around our body.

A

The respiratory system brings oxygen into the body and the circulatory system moves oxygen throughout the body.

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25
Q

What is a fossil?

A

Remains or traces of Prehistoric life

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26
Q

What does a Solar Cell do?

A

It converts light energy to electrical energy

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27
Q

True or false: Sound can transfer energy from place to place?

A

True

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28
Q

True or false: Heat can transfer energy from place to place?

A

True

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29
Q

What is a food web?

A

A food web is a model of intersecting food chains

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30
Q

What does a decomposer do?

A

Decomposers break down dead organisms.

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31
Q

What is a food chain?

A

A sequence of living things in which each on feeds on the one below it.

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32
Q

What is the process by which plants make their own food using sunlight?

A

Photosynthesis

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33
Q

True or False: The scientific method is a linear process.

A

False

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34
Q

Fill in the blank: The ____ is the basic unit of life.

A

cell

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35
Q

What is the force that pulls objects toward the Earth?

A

Gravity

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36
Q

What tool is used to measure temperature?

A

Thermometer

37
Q

Multiple Choice: Which of the following is NOT a state of matter? A) Solid B) Liquid C) Energy D) Gas

38
Q

What is the term for a change in an organism’s DNA?

39
Q

True or False: Water is a compound made of hydrogen and oxygen.

40
Q

What is the name of the scientist who proposed the theory of evolution by natural selection?

A

Charles Darwin

41
Q

Fill in the blank: The ____ system is responsible for transporting blood throughout the body.

A

circulatory

42
Q

What is the main gas that plants take in during photosynthesis?

A

Carbon dioxide

43
Q

Multiple Choice: Which part of the cell controls what enters and exits? A) Nucleus B) Cell membrane C) Cytoplasm D) Ribosome

A

B) Cell membrane

44
Q

What is the term for the variety of life in the world or in a particular habitat?

A

Biodiversity

45
Q

True or False: An atom is the smallest unit of matter.

46
Q

What is the name of the process where liquid water turns into water vapor?

A

Evaporation

47
Q

Fill in the blank: The ____ is the part of the experiment that is changed.

A

independent variable

48
Q

What is the term for a substance that speeds up a chemical reaction?

49
Q

Multiple Choice: Which of the following is a renewable resource? A) Coal B) Oil C) Solar energy D) Natural gas

A

C) Solar energy

50
Q

What is the main purpose of the scientific method?

A

To investigate and answer questions through experimentation.

51
Q

True or False: A hypothesis is a proven fact.

52
Q

Fill in the blank: In an experiment, the ____ variable is what you measure.

53
Q

What is the unit of force in the International System of Units (SI)?

54
Q

What is the term for the amount of space an object occupies?

55
Q

Multiple Choice: What type of bond involves the sharing of electron pairs between atoms? A) Ionic B) Covalent C) Metallic D) Hydrogen

A

B) Covalent

56
Q

What is the primary component of Earth’s atmosphere?

57
Q

True or False: An ecosystem includes both living and non-living components.

58
Q

Fill in the blank: The ____ is the part of the planet where life exists.

59
Q

What is the term for the measure of how much matter is in an object?

60
Q

Multiple Choice: Which of the following is a characteristic of living things? A) Reproduction B) Inability to grow C) Lack of response to stimuli D) None of the above

A

A) Reproduction

61
Q

What is the name of the scientist who developed the periodic table?

A

Dmitri Mendeleev

62
Q

True or False: The pH scale measures how acidic or basic a solution is.

63
Q

Fill in the blank: The ____ is the part of the experiment that does not receive treatment.

A

control group

64
Q

What is the process by which water vapor cools and changes back into liquid water?

A

Condensation

65
Q

What is the term for an organism’s role in its environment?

66
Q

Multiple Choice: Which organ in the human body is primarily responsible for pumping blood? A) Brain B) Liver C) Heart D) Lungs

67
Q

What is the term for the study of living organisms?

68
Q

True or False: The Earth’s crust is the innermost layer of the Earth.

69
Q

Fill in the blank: The ____ is the layer of gases surrounding the Earth.

A

atmosphere

70
Q

What is the term for the energy stored in an object due to its position?

A

Potential energy

71
Q

Multiple Choice: What is the process of breaking down food into energy called? A) Photosynthesis B) Respiration C) Fermentation D) Digestion

A

B) Respiration

72
Q

What is the term for the distance between two peaks or troughs of a wave?

A

Wavelength

73
Q

True or False: A solution is a homogeneous mixture.

74
Q

Fill in the blank: The smallest particle of an element is called an ____.

75
Q

What is the term for the movement of tectonic plates?

A

Plate tectonics

76
Q

Multiple Choice: Which of the following is NOT a function of the skeletal system? A) Protects organs B) Produces hormones C) Supports the body D) Enables movement

A

B) Produces hormones

77
Q

What is the term for the layer of Earth beneath the crust?

78
Q

True or False: Energy can be created or destroyed.

79
Q

Fill in the blank: The ____ is the central part of an atom.

80
Q

What is the term for the study of weather patterns?

A

Meteorology

81
Q

Multiple Choice: Which type of rock is formed from the cooling of magma? A) Sedimentary B) Metamorphic C) Igneous D) None of the above

A

C) Igneous

82
Q

What is the term for the force that opposes motion between two surfaces in contact?

83
Q

True or False: Chlorophyll is the pigment responsible for the green color in plants.

84
Q

Fill in the blank: The ____ is the outermost layer of the Earth.

85
Q

What is the term for the change of state from solid to liquid?

86
Q

Multiple Choice: Which of the following is a function of the respiratory system? A) Transporting nutrients B) Exchanging gases C) Producing hormones D) None of the above

A

B) Exchanging gases

87
Q

What is the term for a reaction that absorbs energy?

A

Endothermic reaction

88
Q

Fill in the blank: The ____ is the part of the brain responsible for voluntary movement.

A

cerebellum

Grade 6-8 Science (8 decks)

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