Diffusion, Osmosis and Photosynthesis - (CSR)

Diffusion is the natural movement of particles

• from an area of low concentration to an area of lower concentration

• from an area of high concentration to an area of higher concentration

• from an area of higher concentration to an area of lower concentration

• from an area of lower concentration to an area of higher concentration

Particles diffuse until

• the mixture has an uneven distribution of particles.

• they are evenly distributed throughout the mixture.

• the area of low concentration becomes the area of low concentration.

• the area of high concentration becomes the area of low concentration.

Checkbox Question: Which of the following are examples of diffusion? (Tick the correct answers only).

• Your neighbor is baking bread and you can smell it all the way from your house.

• You squeeze toothpaste out of a tube

• You can smell your friend's perfume

• You add squeezy to a bowl of water and stir. The whole mixture turns green.

• You pour too much juice into a cup and it overflows.

Osmosis is the

• diffusion of water molecules

• diffusion of water molecules across a selectively permeable membrane

• diffusion of particles across a selectively permeable membrane

• diffusion of water molecules across a membrane

Which of the following are examples of osmosis?

• A shell-less egg placed in a glass of water, doubles in size after 2 days.

• 
• Potato strips become bigger after soaking in water.

• Water from the soil enters the root cells of a plant

• Oxygen moving from inside the lungs into the blood.

Tags

NGSS.MS-LS2-3

What is photosynthesis?

• The process by which plants make their own food.

• The process by which living things release energy from food.

• The process by which animals make their own food.

• The process by which animals take in oxygen.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Which the following energy changes occurs during photosynthesis?

• Chemical energy is converted into light energy.

• Light energy is converted kinetic energy.

• Light energy is converted into chemical energy.

• Chemical energy is converted into electrical energy.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Checkbox question: Which of the following are the raw materials (reactants) of photosynthesis? (think carefully here and only tick the correct answers).

• Carbon dioxide

• Glucose

• Sunlight

• Water

• Oxygen

Checkbox question: Which of the following are the products of photosynthesis? (think carefully here and only tick the correct answers).

• Carbon dioxide

• Glucose

• Sunlight

• Water

• Oxygen

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Checkbox question: Which of the following are the conditions needed for photosynthesis? (think carefully here and only tick the correct answers).

• Chlorophyll

• Glucose

• Sunlight

• Water

Tags

NGSS.MS-LS1-6