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15
×
Which part of Earth is the hottest?
The ocean floor
The core
The clouds
The crust
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15
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25. What kind of surface would create a clear reflection?
Transparent and bumpy
Soft and dull
Sticky and rough
Smooth and shiny
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15
×
Which adaptation helps birds fly?
Hollow bones
Long necks
Heavy legs
Sharp teeth
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15
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29. What happens to light when it hits a black object?
It is absorbed
It passes through
It is reflected
It shines brighter
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lifesaver
Give 25 points!
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magnet
Take 20 points!
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×
fairy
Take points!
5
10
15
20
25
×
baam
Lose 25 points!
Oops!
15
×
36. Why is rubber used to cover wires?
Because it's shiny
Because it is an insulator
Because it melts easily
Because it's heavy
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15
×
Why are wires in appliances not left uncovered?
To prevent electric shocks
To make them longer
To keep them shiny
To make them light up
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15
×
Which part of the Earth is the hottest?
Inner core
Crust
Mantle
Atmosphere
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baam
Lose 15 points!
Oops!
×
star
Double points!
Okay!
×
gift
Win 15 points!
Okay!
×
baam
Lose 20 points!
Oops!
15
×
What is camouflage?
A way animals blend into their surroundings
A way animals move faster
A method for animals to find food
A type of animal sound
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trap
No points!
Oops!
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star
Double points!
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rocket
Go to first place!
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×
lifesaver
Give 15 points!
Oops!
15
×
Which of the following objects is opaque?
A magnifying glass
A wooden door
A glass window
A clear plastic sheet
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15
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28. Which material is opaque?
Clear plastic
Air
Wood
Glass
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15
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41. What does a switch do in an electric circuit?
It makes the wires longer
It opens or closes the circuit
It stores energy
It makes the circuit louder
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15
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26. What kind of materials allow light to pass through easily?
Transparent materials
Opaque materials
Metallic materials
Reflective materials
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15
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40. In which of these places is it most dangerous to use electrical appliances?
Next to a wooden table
On a carpet
Near a full bathtub
In a dry room
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