Science 1st Semester Exam

Question 1

Medium

Answer 1

Any substance that a wave moves through

Question 2

Mechanical waves

Answer 2

Waves that transfer energy through matter

Question 3

Transverse waves

Answer 3

A wave that travels at right angles or perpendicular to the disturbance

Question 4

Longitudinal waves

Answer 4

A wave that travels in the same direction as the disturbance

Question 5

Crest

Answer 5

The highest point or peak of a wave

Question 6

Trough

Answer 6

The lowest point or valley of a wave

Question 7

Wavelength

Answer 7

The distance from one wave crest or trough to the next

Question 8

Frequency

Answer 8

The number of waves passing a fixed point in a certain amount of time

Question 9

Reflection

Answer 9

The bouncing back of a wave after it strikes a barrier

Question 10

Refraction

Answer 10

The bending of a wave as it enters a new medium at an angle other than 90degrees

Question 11

Diffraction

Answer 11

The spreading out of waves through an openings or around the edge of an obstacle

Question 12

Electromagnetic spectrum

Answer 12

Range of all EM frequencies

Question 13

Radio waves

Answer 13

EM waves with the longest wavelengths, lowest frequencies, and lowest energies.

Question 14

Visible light

Answer 14

Part of the EM spectrum human eyes can see.

Question 15

Wave

Answer 15

A disturbance that transfers energy from one place to another

Question 16

Transmission

Answer 16

The passage of an EM wave through a medium

Question 17

Absorptions

Answer 17

The disappearance of an EM wave through a medium

Question 18

Observation

Answer 18

An act of noting and recording an event, characteristic, behavior, or anything else detected

Question 19

Hypothesis

Answer 19

A tentative answer to a if……then statement

Question 20

Experiment

Answer 20

An organized procedure to study something under controlled conditions

Question 21

Investigation

Answer 21

The process of collecting evidence

Question 22

Conclusion

Answer 22

The end results of the experiment

Question 23

Problem

Answer 23

A scientific problem that needs to be further experimented

Question 24

Solution

Answer 24

The conclusion to the scientific problem