Mid-Term

Question 1

Energy

Answer 1

The ability to do work or cause change

Question 2

Physics

Answer 2

The study of matter & energy and how they interact

Question 3

Independent variable

Answer 3

The factor that a scientist changes in a experiment

Question 4

Matter

Answer 4

Anything that has mass or occupies space

Question 5

Chemistry

Answer 5

The study of the properties of matter & how matter changes

Question 6

Hypothesis

Answer 6

A possible explanation for a set of observations or an answer to a scientific question

Question 7

Physical Science

Answer 7

The study of matter, energy, & the changes they undergo

Question 8

Qualitative observation

Answer 8

An observation that deals with characteristics that are not expressed in numbers

Question 9

Quantitive observation

Answer 9

An observation that deals with a number amount

Question 10

Chemistry

Answer 10

The study of the properties of matter and how matter changes

Question 11

List the stores of the scientific method:

Answer 11

• observation
• question
• hypothesis
• method
• result
• conclusion

Question 12

List the 3 skills scientist use to learn about the natural world:

Answer 12

• observing
• inferring
• predicting

Question 13

Another name for the dependent variable?

Answer 13

Responding variable

Question 14

Another name for the independent variable?

Answer 14

Manipulated variable

Question 15

Wave

Answer 15

A disturbance that transfers energy from place to place

Question 16

Crest

Answer 16

Highest part of a transverse wave

Question 17

Vibration

Answer 17

A repeated back-and-forth or up-and-down motion

Question 18

Transverse wave

Answer 18

A wave that moves the medium in a direction perpendicular to the direction in which the wave travels

Question 19

Dependent variable

Answer 19

• what you measure in the experiment and what is affected during the experiment.
• responds to the independent variable.
• called dependent because it “depends” on the independent variable.

Question 20

Medium

Answer 20

The material through which a wave travels

Question 21

Mechanical wave

Answer 21

A wave that requires a medium through which to travel

Question 22

Trough

Answer 22

The lowest part of a transverse wave

Question 23

Longitudinal wave

Answer 23

A wave that moves a medium in a direction parallel to to the direction in which a wave travels

Question 24

Wavelength

Answer 24

The distance between 2 corresponding parts of a wave

Question 25

Compression

Answer 25

The part of a longitudinal wave where the particles of the medium are close together

Question 26

Frequency

Answer 26

The # of complete waves that pass a certain point in a certain amount of time

Question 27

Rarefaction

Answer 27

The part of a longitudinal wave where the particles are far apart

Question 28

Hertz(Hz)

Answer 28

Unit of measurement used for frequency

Question 29

Amplitude

Answer 29

The maximum distance the particles of a medium move away from their rest positions as a wave passes through the medium

Question 30

Reflection

Answer 30

The bouncing back of an inlet or wave when it hits a surface through which it cannot pass

Question 31

Law of Reflection

Answer 31

The rule that the angle of reflection equals the angle of incidence

Question 32

Refraction

Answer 32

The bending of waves as they enter a new medium at an angle

Question 33

Diffraction

Answer 33

The bending of waves as they move around a barrier or pass through an opening

Question 34

Interference

Answer 34

The interaction between waves that meet

Question 35

Constructive interference

Answer 35

The interference that occurs when waves combine to make a wave with a larger amplitude

Question 36

Destructive interference

Answer 36

The interference that occurs when two waves combine to make a wave with a smaller amplitude

Question 37

Node

Answer 37

A point of 0 amplitude on a standing wave

Question 38

Antinode

Answer 38

A point of maximum amplitude on a standing wave

Question 39

Unit for force?

Answer 39

Newtons (N)

Question 40

Unit for work?

Answer 40

Joules (J)

Question 41

Unit for power?

Answer 41

Watt(W)

Question 42

Formula for power?

Answer 42

P=W/T

Question 43

Formula for work?

Answer 43

- W= FxD | - W= PxT

Question 44

list the 6 simple machines:

Answer 44

1. Screw 2. Inclined plane 3. Wedge 4. Wheel & Axle 5. Pulley 6. Lever

Question 45

Screw

Answer 45

A simple machine that is an inclined plane wrapped around a central cylinder to form a spiral

Question 46

wedge

Answer 46

A simple machine that is an inclined plane that moves

Question 47

Wheel & Axle

Answer 47

A simple machine that consists of 2 attached circular or cylindrical objects that rotate about a common axis, each one with a different radius

Question 48

Pulley

Answer 48

A simple machine that consists of a grooved wheel with a rope or cable wrapped around it

Question 49

Lever

Answer 49

A simple machine that consists of a rigid bar that pivots about a fixed point

Question 50

inclined plane

Answer 50

a simple machine that is a flat, sloped surface

Question 51

chemical Energy

Answer 51

A form of potential energy that is stored in chemical bonds between atoms

Question 52

Mechanical Energy

Answer 52

kinetic or potential energy associated with the motion or position of an object

Question 53

Kinetic Energy

Answer 53

Energy that an object has due to its motion

Question 54

Potential Energy

Answer 54

Stored energy that results from the position or shape of an object