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3rd year assignment A

Total questions: 20

Worksheet time: 21mins

Name
Class
Date
1.
An animal that gets energy from eating both plants and animals is a 
a)
herbivore
b)
carnivore
c)
omnivore
d)
autotroph
2.
Which one is NOT an example of a decomposer?
a)
mushroom
b)
leaves
c)
mold
d)
worm
3.
Which of the following is a herbivore?
a)
cricket
b)
frog
c)
hawk
d)
shrew
4.
What is this called?
a)
Food Web
b)
Food Chain
c)
Abiotic Factors
5.
An animal that eats other animals is a....
a)
carnivore
b)
omnivore
c)
herbivore
d)
decomposer
6.
The habitat of a moth species included trees with both light and dark colored bark.Therefore the moth species included both light and dark colored variants.Then the light-colored trees were wiped out by a disease, and within a few years nearly all the moths in this forest were dark colored. Which of the following choices BEST explains what happened?
a)
The light moths that survived all had dark offspring in order to adapt to the change.
b)
The dark moths were less visible to predators, so mostly light moths were eaten.
c)
The few light moths that survived did not mate, and therefore they had no offspring.
d)
The light moths changed their wing pigments to darker colors to avoid being eaten.
7.
If there is more food than usual in an ecosystem, then the population will mostly likely...
a)
stay the same
b)
decrease
c)
increase
8.
What happened to the wolf population between 1980 and 1982?
a)
it increased rapidly
b)
it decreased rapidly
9.

What is the name of the apparatus shown?

a)

Pooter

b)

Beating tray

c)

Line transect

d)

Pitfall trap

10.

A quadrat is used in studying habitats.

Which one of the following statements about the use of quadrats is NOT correct?

a)

The quadrat should be thrown behind by the person using it.

b)

Quadrats are sometimes made of wood.

c)

The quadrat has a square shape.

d)

The quadrat is used to estimate numbers of plants and small animals in an area.

11.

The names and abundances of plants were recorded by pupils studying a habitat.

The results are shown in the table.

Which one of the plants can be considered rarest (the least) in this habitat?

a)

Clover

b)

Grass

c)

Daisy

d)

Plantain

12.
What kind of circuit is this?
a)
Series
b)
Consecutive
c)
Parallel
d)
Training
13.
What kind of circuit is this?
a)
Series
b)
Consecutive
c)
Parallel
d)
Training
14.
What is an insulator?
a)
The area of a conductor through which a current is able to move
b)
A material which does not allow electricity to go through it
c)
The amount of devices which are in a circuit
d)
A battery or other device which provides energy for a circuit
15.

What is the unit of resistance?

a)

Ω (Ohms)

b)

V (Volts)

c)

A (Amps)

d)

W (Watts)

16.

What is the Voltage of a circuit that has a resistance of 5 Ω and a current of 2 A? (remember V=IR)

a)

25 V

b)

10 V

c)

2.5 V

d)

0.4 V

17.
Glass is a good conductor.
a)
True
b)
False
18.

What is the name of this component?

a)

Fuse

b)

Resistor

c)

Ohms

d)

Variable Resistor

19.
what is this symbol for?
a)
light bulb
b)
switch
c)
battery
d)
resistor
20.
This is the circuit symbol for ...
a)
an AC current source
b)
a DC current source
c)
an ammeter
d)
a voltmeter

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