Year 8 revision homework
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Lesduur is: 30 minOnderdelen in deze les
Slide 1 - Tekstslide
What state of matter has a definite volume but no definite shape?
A
Solid
B
Liquid
C
Gas
D
Plasma
Slide 2 - Quizvraag
Which state of matter has particles that are tightly packed together?
A
Liquid
B
Gas
C
Solid
D
Vapor
Slide 3 - Quizvraag
In which state of matter do particles have the most energy?
A
Solid
B
Liquid
C
Plasma
D
Gas
Slide 4 - Quizvraag
What state of matter has a definite shape and volume?
A
Vapor
B
Gas
C
Solid
D
Liquid
Slide 5 - Quizvraag
Which unit is commonly used to measure weight?
A
Meters
B
Liters
C
Grams
D
Kelvin
Slide 6 - Quizvraag
What happens to the balance when the weights on both sides are equal?
A
It remains level or balanced
B
It displays an error message
C
It becomes unstable
D
It tilts to one side
Slide 7 - Quizvraag
Shona was learning about photosynthesis. She looked on the internet and found that in this process, plants take in carbon dioxide gas from the air and water from the ground. Using energy from the sun they can turn these chemicals into a kind of sugar called glucose and the gas oxygen. Arrange the word equation.
+
+
Oxygen
Carbon dioxide
Water
Glucose
Slide 8 - Sleepvraag
Which organism is at the top of a food chain?
A
Producer
B
Decomposer
C
Apex predator
D
Herbivore
Slide 9 - Quizvraag
What is the term for a series of organisms where each is eaten by the next member in the series?
A
Population
B
Food chain
C
Ecosystem
D
Food web
Slide 10 - Quizvraag
Complete the word and chemical equations for photosynthesis.
Word equation:
+
+
→
Chemical equation:
+
→
+
Water
Carbon dioxide
Glucose
Oxygen
Slide 11 - Sleepvraag
Which of the following is a primary consumer in a food chain?
A
Decomposer
B
Herbivore
C
Carnivore
D
Omnivore
Slide 12 - Quizvraag
What role does the enzyme amylase play in saliva?
A
It regulates blood sugar levels.
B
It breaks down complex carbohydrates into simpler sugars.
C
It aids in absorbing nutrients.
D
It helps in breaking down proteins.
Slide 13 - Quizvraag
Which enzyme in saliva helps in breaking down starches?
A
Protease
B
Lipase
C
Maltase
D
Amylase
Slide 14 - Quizvraag
One reason why plants in the rain-forest has ______________ leaves is because they need to trap alot of _________. If they don't trap light means that photosynthesis will be ________ . Large leaves and enough trapped light means that the plant can _______________ successfully.
photosynthesise
slow
large
light
Slide 15 - Sleepvraag
What is the primary source of energy in a food chain?
A
Soil
B
Water
C
Sunlight
D
Air
Slide 16 - Quizvraag
Give the word equation for photosynthesis.
+
+
carbon dioxide
water
glucose
oxygen
sunlight
Slide 17 - Sleepvraag
Put the photosynthesis equation in the correct order
Water
Carbon dioxide
Glucose
Oxygen
Slide 18 - Sleepvraag
+
+
What is the equation for photosynthesis?
Glucose
Oxygen
Carbon dioxide
water
Slide 19 - Sleepvraag
Structure
Function
Controls what enters and leaves the cell.
Contains DNA and controls the cell processes.
The site of respiration.
The site of chemical reactions in the cell.
Storing cell sap and keeping the cell rigid.
The site of photosynthesis. Contains chlorophyll.
Protects and supports the cell.
Cell membrane
Chloroplast
Cell wall
Vacuole
Mitochondria
Nucleus
Cytoplasm
