Ôn tập Anh văn tích hợp Khối 8 Tuần 24 - 25

Understand that energy is stored in different ways: thermal energy, chemical energy, kinetic energy, gravitational potential energy, elastic potential energy (strain energy) and nuclear [r]

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RESPIRATION

WORKSHEET

Watch these videos:

https://www.youtube.com/watch?v=UTR1IsX55dc&t=96s https://www.youtube.com/watch?v=8NUxvJS-_0k

https://www.youtube.com/watch?v=ZkqEno1r2jk https://www.youtube.com/watch?v=huKUJsqik2I Agenda:

Review structures of the respiratory system See how plants and animals create ATP Know the equation for respiration

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Remember to turn on the subtitles! - Click on the CC button.

1 What is the most important function of the respiratory system? (1 mark) a) to transport air in and out of the lungs

b) to protect the body from harmful particles that are inhaled c) to exchange oxygen and carbon dioxide

d) to fill the lungs with air

2 Which of the following is not part of therespiratory system? (1 mark) a) pharynx

b) larynx c) nasal cavity d) esophagus

3 What is the role of the epiglottis in the respiratory system? (1 mark) a) to stop food entering the trachea

b) to keep the trachea open

c) to stop food entering the esophagus d) to trap any inhaled particles

4 List all the main components of the respiratory system, as air travels from the pharynx to the alveoli

Pharynx→ → → → →Alveoli

5 Where does gas exchange occur and what two gases are involved? (2 marks)

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C6H12O6 + → H2O + +

7 How does the diaphragm help our bodies breath? (3 marks)

8 Explain the difference between chronic bronchitisand emphysema (4 marks)

9 Write down the word equation ofenergy production (2 marks)

10 Complete and balance the following equation (2 marks)

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12 Fill in the table and find the SA to Vol ratio (5 marks)

Surface Area (cm2)

Volume (cm3)

SA:Vol

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ENERGY RESOURCES

WORKSHEET

Agenda:

Know joules (J) and kilojoules (kJ) as units of energy.

Understand that energy is stored in different ways: thermal energy, chemical energy, kinetic energy, gravitational potential energy, elastic potential energy (strain energy) and nuclear energy.

Understand the law of conservation of energy.

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Watch these videos:

https://www.youtube.com/watch?v=JGwcDCeYRYo https://www.youtube.com/watch?v=7hcv_mxcA-g

https://www.youtube.com/watch?v=fHztd6k5ZXY

Multiple choice:

Circle the correct answer.

1 What is the scientific unit for energy? (1 Mark) a) Meter

b) Kelvin c) Gram d) Joule

2 Which of these is true about potential energy? (1 Mark) a) Objects with potential energy are always moving

b) Objects get their potential energy from the Sun

c) Objects have potential energy because of their position d) Objects with potential energy are very hot

3 What is the formula for calculating efficiency? (1 Mark) a) Efficiency = useful energy / total energy

b) Efficiency = total energy / useful energy c) Efficiency = total energy / waste energy d) Efficiency = kinetic energy / potential energy

4 What is the largest source of energy forthe Earth? (1 Mark) a) The Earth’s core

b) Fossil Fuels c) Microorganisms d) The Sun

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5 Please write the law of conservation of energy: (2Marks)

6 You plug in your blender and the blades start to move At the same time, the blender makes a lot of noise, and when you touch it, it feels hot Please fill in the diagram below with the correct types of

energy (2Marks)

+ +

7 In question 2, we began with one input energy and transferred it to three types of output energy Which of those output energies is considered useful? Which two are considered non-useful? Hint: Think about what we want our blender to do, and which type of energy that is (2Marks) Useful:

Non-useful:

8 You buy a lamp and want to calculate its efficiency The amount of energy going into the lamp is equal to 100J The amount of light energy produced is 80J What is the efficiency of your lamp? Please show

your work (3 marks)

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RENEWABLE ENERGY

WORKSHEET

Agenda:

Explain what a fuel is and know examples.

Know what fossil fuels are and how they were formed.

Know the difference between renewable and non-renewable energy sources.

Know how some renewable energy resources can be used to generate electricity and provide heat.

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Watch this video:

https://www.youtube.com/watch?v=gAES1ARTXUg

Remember to turn on the subtitles! - Click on the CC button. *The subtitles sometimes say dance when it should say dams.*

Then answer the following questions:

Multiple choice:

1 Examples of fossil fuels are: (1 mark)

A) sunlight and oil

B) geothermal heat and oil C) moving water and wind D) coal and oil

2 Carbon dioxide is a pollutant that is formed when fossilfuels are . (1 mark)

A) formed B) burned C) found D) moved

3 Oil spills happen when the oil is being . (1 mark)

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silt dams flooding

flow environment

4 Fill the gaps with words from the box: (5 marks)

The first renewable energy source thathas a harmful impact on the is hydro electricity Hydro electric energy is made in These dams make energy from the waters strong

, and prevents rivers from That may sound good to people, but it is actually not that good for plants nearby This is because floods deposit ( a mixture of gravel,sand and top soil) that keeps the plants healthy

5 Label the following options as an advantage(A) or disadvantage (D) and match them to an energy source.

(5 marks)

A/D Option Energy source:

Prevents fish from travelling up-river Can only gather energy during the day Is not a renewable energy source Is a renewable energy source Releases hydrogen sulfide

A - Fossil fuels B - Hydro electricity C - Geothermal energy D - Solar energy E - Wind energy

6. What is a fossil fuel, and how were they formed? (2 marks)

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STATES OF MATTER

WORKSHEET

Agenda:

Understand that the periodic table is a chemistry map of all elements How it is arranged and what are groups and periods.

Recall the names and symbols of some common elements.

Distinguish between elements, compounds and mixture molecules given a formula or image

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Watch these videos:

https://www.youtube.com/watch?v=_2JI7tz4blk( The Periodic Table )

https://www.youtube.com/watch?v=pWZlICXw3Ng( Substances and mixtures)

If you would like to know more about the periodic table please watch the following video. (It is NOT required to complete the worksheet.)

https://www.youtube.com/watch?v=P6DMEgE8CK8

Remember to turn on the subtitles! - Click on the CC button.

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Multiple choice:

1 A period in the Periodic Table is a ? (1 mark) A) row B) element C) column

2 A group in the Periodic Table is a ?

D) class

(1 mark) B) row B) element C) column D) class

3 Elements in The Periodic table are arranged in orderof increasing ? (1 mark) A) size B)chemical properties C) colour D) atomic number

4 Name families in the periodic table

2

5 Match the words to their properties

Metal * * All elements are evenly spaced

Nonmetal * * Has a mix of metal and non-metal properties Metalloid * * Conducts heat and electricity

Homogeneous mixture * * Brittle

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6 How are elements and compounds different? (2 marks)

7 Can pure substances be separated by physicalmeans alone? Why? (3 marks)

8 Look at the diagrams below and decide whether each one represents the particles in an element, a compound or a mixture Different color atoms represent atoms of different elements (6 marks)

i ii iii iv v vi

i ii iii