YR2_T1_LSN8

• Science
• Middelbare school
• havo, vwo
• Leerjaar 2

Get ready

• Your laptop (join the lessonup)
• Your notebook.
• Your textbook.
• Pen & highlighter
• Calculator

YR2_T1_LSN 7

Recap Topic 1 +Study for test

Plan for today

• Homework check (T1.4 & 1.5)
• Recap topic 1 
• Study for test

Homework check:

• Open the answers of T1.4 & 1.5 on Classroom
• Correct your hw in a different colour.
• Bring up your textbook and notebook when your name is called. 

Recap Topic 1

• 1.1 Substances
• 1.2 Measuring mass and volume
• 1.3 Density
• 1.4 Light and vision
• 1.5 Sound and hearing

HOMOGENOUS

HETEROGENOUS

1.1 - Separation methods:

• Extraction

Separation based on difference in solubility

• Filtration

Separation based on difference in particle size

• Evaporation

Separation based on difference in boiling point

1.2 - Volume:

Regular shapes you can calculate the volume using a formula

Calculate the volume of the sphere:

(Round your answer to 2 decimal places.

Answer:

F: 4/3 x radius x radius x radius x pi

I: radius is 6 m

C: 4/3 x 6m x 6m x 6m x pi 

A: 904,78m³

What is the volume of the bolt?

Answer:

a = 150mL

b = 180mL

180 - 150 = 30mL

1.3 Density calculations

A box has the following measurement:
mass = 132 g & volume = 12 cm³
What is the density?

Answer:

/12                                                     /12                                so: 11g/cm³

F: density = mass / volume

I: 132 g (mass) and 12cm3 (volume)

C: 132 / 12

A: 11 g/cm3

Mass	Volume
132g	12cm³
11g	1cm³

Lens

Iris

Cornea

Eye muscle*

Choroid*

Retina

Fovea*

Blind spot

Optic nerve

Sclera

Vitreous body

auricle

outer ear canal

eardrum

eustachian tube

cochlea

hammer*

stirrup*

anvil*

Any questions about topic 1?

Study for the test

• Study your learning goals (see classroom)
• Do revision topic 1 test (see classroom)
• Do the practice test (see classroom)
• Study for the test in your own way