

Term 1 Mock I Exam Year 9 Science
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Science
•
9th Grade
•
Medium

Tan Desmond
Used 34+ times
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8 Slides • 9 Questions
1
Term 1 (2020/2021) Mock I Exam Year 9 Science

2
Sound
Pitch (high pitch and low pitch)
Loudness (amplitude)
3
Multiple Choice
What is vibration?
how loud a sound is
the back and forth movement of matter
how high or low a sound is
the loudness or softness of a sound
4
Geocentrism
- proposed by Ptolemy
- this idea is INCORRECT
- this idea lasted for about 1500 years long
5
Heliocentrism
proposed by Nicholas Copernicus
supported and confirmed by Galileo Galilei through observation by telescope
Sun is at the centre of the Universe
6
Multiple Choice
Which astronomer believed and proposed that Sun is at the centre of the Universe?
Darwin
Ptolemy
Nicholas Copernicus
Desmond Tan
7
Open Ended
When sodium react with water a small explosion happened.
Name the two products.
8
Open Ended
This question is about reactivity series.
Complete this series.
K
Na
Ca
Mg
__ (A)
Zn
__ (B)
Sn
Pb
Cu
__ (C)
9
10
Multiple Choice
A longer string makes a _______ pitch than a short string.
lower
higher
softer
louder
11
Chemical formula
Element
Atom
12
13
Multiple Choice
How many elements can be found in this compound?
3
4
5
6
14
Multiple Choice
How many atoms are there in this compound?
5 atoms
6 atoms
7 atoms
8 atoms
15
Naming Chemical Compound
Element
Element + Element --> Compound
16
Open Ended
Name this chemical compound.
17
Open Ended
Name this chemical compound.
Term 1 (2020/2021) Mock I Exam Year 9 Science

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