year 7 Science Homework Week 3 - Naomi Arthur | Biblioteka

1

How do we convert from cm to m?

÷ by 100

X by 100

÷ by 1000

1

How do we convert from m to cm?

÷ by 100

X by 100

÷ by 1000

1

How do we convert from m to km?

÷ by 100

X by 1000

÷ by 1000

1

How do we convert from km to m?

÷ by 100

X by 1000

÷ by 1000

1

How do we convert from cm to mm?

÷ by 100

X by 1000

x by 10

1

How do we convert from mm to cm?

÷ by 10

X by 1000

÷ by 10

1

How do we convert from mm to µm?

÷ by 10

X by 1000

÷ by 1000

1

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

1

The particles in a solid are:

Stuck together by strong forces

Held together by weak forces

Held together by strong forces

1

The particles in a solid are:

Very far apart

Very close together

some touching some not

1

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

1

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

1

The particles in a liquid:

Stay in a fixed position

Can slide over each other

Can move in all directions randomly

1

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

1

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

1

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

1

In which state of matter do the particles have the most kinetic energy?

Solids

Liquids

Gases

1

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

1

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

1

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.

1

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.