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Science 8 > Semester 1 > Flashcards

Semester 1 Flashcards

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0
Q

How to scientists communicate results?

A

By comparing data

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1
Q

What is science?

A

Science is a process of gathering information through observation and experimentation to ID patterns in the Natural world

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2
Q

When is something moving?

A

When the object changes it’s position relative to a reference point

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3
Q

Name the different ways an object can move

A

Straight line
Projectile
Circular
Vibrational

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4
Q

What is Miss. McConnell’s favorite ice cream flavor

A

Rocky Road

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5
Q

How can motion be described quantitatively?

A

Speed
Distance
Time
Acceleration

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6
Q

What is acceleration?

A

Rate of change of velocity

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7
Q

Formula for acceleration

A

Velocity final-Velocity initial
————————————
Time

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8
Q

What is a variable?

A

A quantity that can be specified with a numerical value and unit

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9
Q

What is a graph?

A

A mathematical tool displaying the relationships between variables

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10
Q

Steps to making a line graph

A
  1. Draw axis
  2. Label axes with independent and Dependent variables
  3. Create a scale
  4. Plot data
  5. ID relationships
  6. Fig# and title
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11
Q

How to calculate slope

A

Slope= y/x

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12
Q

What is the purpose of taking the average of many measurements?

A

To get precise and accurate data

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13
Q

What is force

A

A push or pull or any action that has the ability to change the motion if an object

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14
Q

What is the unit of measurement for force?

A

Newtons(N)

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15
Q

What happens when there is a balanced force?

A

No motion

16
Q

What happens when there is an unbalanced force?

A

A change in motion

17
Q

What is Newton’s first law?

A

An object in motion will stay in motion and an object at rest will stay in rest unless acted upon by an outside force

18
Q

What is inertia?

A

Resistance an object must change in its state of motion.

+inertia=+mass

19
Q

What is newtons second law of motion?

A

Force = mass • acceleration

F=MA

20
Q

What is newtons third law of motion

A

For every action there is an equal and opposite reaction

21
Q

What Is the unit of energy

A

Joule (J)

22
Q

Formula for work

A

Newton•distance

23
Q

What is energy

A

Ability to cause change

24
Q

What is power?

A

Work done

25
Q

Unit of power

A

Watts

26
Q

Formula for energy

A

Energy/Time=Watts

27
Q

What is potential energy?

A

Stored energy

28
Q

Examples potential energy

A

Nuclear, chemical, elastic, gravitational,

Oil, coal

29
Q

What is kinetic energy

A

Motion of waves, substances, atoms and molecules

30
Q

Examples of Kinetic Energy?

A

Radiant, thermal, motion, sound, and electricity

31
Q

True or false:energy cannot be created or destroyed it can only be transformed

A

True

32
Q

What is momentum?

A

Quantity of motion

33
Q

Formula for momentum

A

Mass• velocity

Science 8 (1 decks)

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