WorksheetsEASE 2 - Simulation 2 (Grade 7)
Total questions: 27
Worksheet time: 27mins
Name
Class
Date
1.
Name two properties that metals can do better than Non-Metals!
a)
a. Dull and malleable
b)
b. Brittle and shiny
c)
c. Magnetic and lustre
d)
d. Conduct heat and electricity
2.
Single-celled microorganisms with cells like animal cells are called
a)
a. Fungi
b)
b. Bacteria
c)
c. Algae
d)
d. Protozoa
3.
How do microorganisms contribute to the process of decay?
a)
a. they release oxygen
b)
b. they absorb sunlight
c)
c. they break down organic matter
d)
d. they accelerate photosynthesis
4.
What is a decomposer in an ecosystem?
a)
a. A plant that produces oxygen
b)
b. An animal that preys on other organisms
c)
c. A microorganism that breaks down dead plants and animals
d)
d. A type of fungus that causes diseases
5.
You and your classmates are conducting an experiment for a science project to understand the factors affecting the rate of decay. You're curious to see how temperature influences the decay of bread. What variable should you focus on changing to investigate the impact of temperature on decay?
a)
a. Time
b)
b. Type of organic matter
c)
c. Amount of microorganisms added
d)
d. Temperature
6.
In a tropical rainforest ecosystem, you are examining the relationships between various organisms. Which role do the microorganisms play in this rainforest's food web?
a)
a. Predators
b)
b. Producers
c)
c. Primary consumers
d)
d. Decomposers
7.
Why are microorganisms important in food chains and food webs?
a)
a. They are the primary source of energy in ecosystems.
b)
b.They break down dead organisms and recycle nutrients.
c)
c. They are at the top of the food chain and control the ecosystem.
d)
d. They are the main predators in aquatic environments.
8.
The following groups that do not belong to the group of microorganisms are......
a)
a. Bacteria
b)
b. Fungi
c)
c. Virus
d)
d. Protozoa
9.
In a water, universal indicator is......
a)
a. Red
b)
b. Orange
c)
c. Green
d)
d. Blue
10.
Choose two colorimetric indicators that can be used to determine whether the solution is acid or alkali!
a)
a. Red cabbage juice and universal indicators
b)
b. Hydrochloric acid and litmus
c)
c. Litmus and sodium hydroxide
d)
d. Hydrochloric acid and sodium hydroxide
11.
Brass is alloys of copper and zinc, while Bronze is alloys of copper and tin. Which of these alloys has a higher proportion of copper?
a)
a. Brass
b)
b. Bronze
c)
c. Both have the same proportion
d)
d. Cannot be determined without knowing specific information
12.
What materials do volcanoes release when they erupt?
a)
a. lava and salt
b)
b. ash cloud and lava
c)
c.magma and gases
d)
d. salt and gases
13.
When tectonic plates move together, the rocks crumple and fold upwards. This is called....
a)
a. Earthquake
b)
b. Fold mountains
c)
c. Eruption
d)
d. Tsunami
14.
The part of this demonstration shows that sound travels through ........, which is a ..........
a)
a. air, gas
b)
b. water, liquid
c)
c. table, solid
d)
d. space, vacuum
15.
Which of these can sound travel through?
a)
a. solid
b)
b. solid and liquid
c)
c. solid, liquid, and gas
d)
d. vacuum
16.
Answer this question!
(Note: this distance is not doubled)
a)
a. 750 m/s
b)
b. 1.500 m/s
c)
c. 2.250 m/s
d)
d. 3.000 m/s
17.
These substances turns blue litmus paper into red. What are these substances?
a)
a. vinegar and soap
b)
b. lemon juice and detergent
c)
c. toothpaste and vitamin C
d)
d. human gastric fluid and orange juice
18.
If a substance can damage or pollute the environment, what symbol describes it best
a)
a.
b)
b.
c)
c.
d)
d.
19.
Arrow number 2 indicates about....
a)
a. direction of sound wave
b)
b. direction of cone movement
c)
c. vibration of air particles in sound wave
d)
d. vibration of solid particles in sound wave
20.
Name the two metal components that make up the Earth's core!
a)
a. copper and tin
b)
b. nickel and iron
c)
c. iron and magnesium
d)
d. aluminium and zinc
21.
Bronze is alloys of copper and tin. Copper has a melting point of 1085°C. and tin has a melting poin of 232°C. But, why is a range of temperatures given for the melting point of bronze (860−1150°C)?
a)
a. it is determined by the proportion of copper to tin
b)
b. the range has been found by people before
c)
c. this is only determined by the proportion of copper
d)
d. this is only determined by the proportion of tin
22.
Which zone of the Earth is made of solt-molten rocks (like plasticine)?
a)
a. crust
b)
b. mantle
c)
c. outer core
d)
d. inner core
23.
State what the sound wave passes through to travel between the cups?
a)
a. the room
b)
b. the string
c)
c. the air
d)
d. the mouth
24.
What property of helium makes it useful in balloons?
a)
a. it is shiny
b)
b. it can be dissolved in water
c)
c. less dense than air
d)
d. it is too cheap
25.
Solar Eclipse: In the middle of the shadow, all the light rays from the Sun are blocked. People in the middle of the shadow observe a ……..solar eclipse
a)
a. partial
b)
b. total
c)
c. annular
d)
d. opaque
26.
Why are gold and silver used for jewellery?
a)
a. both of them are sonorous
b)
b. both of them are expensive
c)
c. both of them are lustre
d)
d. both of them are ductile
27.
which animal uses sound reflections (echo) to find food?
a)
a. dog
b)
b. bird
c)
c. dolphin
d)
d. insect
100 %
