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year 7 Science Homework Week 3
By Naomi Arthur
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Last updated over 4 years ago
21 questions
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Question 1
1.
How do we convert from cm to m?
÷ by 100
X by 100
÷ by 1000
Question 2
2.
How do we convert from m to cm?
÷ by 100
X by 100
÷ by 1000
Question 3
3.
How do we convert from m to km?
÷ by 100
X by 1000
÷ by 1000
Question 4
4.
How do we convert from km to m?
÷ by 100
X by 1000
÷ by 1000
Question 5
5.
How do we convert from cm to mm?
÷ by 100
X by 1000
x by 10
Question 6
6.
How do we convert from mm to cm?
÷ by 10
X by 1000
÷ by 10
Question 7
7.
How do we convert from mm to µm?
÷ by 10
X by 1000
÷ by 1000
Question 8
8.
The particles in a solid are:
Completely still and never moving
Always vibrating slightly around a fixed point
Sometimes vibrating slightly and can change position
Question 9
9.
The particles in a solid are:
Stuck together by strong forces
Held together by weak forces
Held together by strong forces
Question 10
10.
The particles in a solid are:
Very far apart
Very close together
some touching some not
Question 11
11.
The particles in a solid:
Cannot be compressed (squashed) because there is very little space between particles
Can be compressed (squashed) because there is some space between particles
Can be compressed (squashed) because there is some space between particles
Question 12
12.
The particles in a liquid are:
Held together by the same strength forces as between particles in a solid
Held together by weaker forces than between particles in a solid
Held together by stronger forces than between particles in a solid
Question 13
13.
The particles in a liquid:
Stay in a fixed position
Can slide over each other
Can move in all directions randomly
Question 14
14.
The particles in a liquid:
Cannot be compressed (squashed) because there is very little space between particles
Can be compressed (squashed) because there is some space between particles
Can be compressed (squashed) because there is some space between particles
Question 15
15.
The particles in a gas are:
Held together by the same strength forces as between particles in a solid or a liquid
Held together by very weak forces
Held together by no forces
Question 16
16.
The particles in a gas:
Cannot be compressed (squashed) because there is very little space between particles
Can be compressed (squashed) because there is lots of space between particles
Can be compressed (squashed) the particles can be pushed and made smaller
Question 17
17.
In which state of matter do the particles have the most kinetic energy?
Solids
Liquids
Gases
Question 18
18.
In which state of matter do the particles have the weakest forces between them so they are able to move further apart?
Solids
Liquids
Gases
Question 19
19.
What will cause particles to gain more kinetic energy and the forces between them to get weaker?
Increase in temperature
Decrease in temperature
No change in temperature
Question 20
20.
During melting:
The temperature increases and the particles gain more kinetic energy, the forces between them get weaker and they can slide over each other.
The temperature decreases and the particles gain more kinetic energy, the forces between them get weaker and they can slide over each other.
The temperature increases and the particles lose kinetic energy, the forces between them get weaker and they can slide over each other.
Question 21
21.
During freezing:
The temperature increases and the particles gain more kinetic energy, the forces between them get weaker and they form a regular arrangement
The temperature decreases and the particles lose kinetic energy, the forces between them get stronger and they form a regular arrangement
The temperature decreases and the particles lose kinetic energy, the forces between them get weaker and they can slide over each other.