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Unit Test 4- Interactions Of Matter And Energy
Test Description: Unit Test 4
Instructions: Answer all questions to get your test result.
1) Bill stands in a swimming pool and notices that the water around his feet is a lot cooler than the water near the surface. Which process causes this difference in temperature?
A
radiation
B
conduction
C
evaporation
D
convection
2) Which material is the best conductor of electricity?
A
stone
B
metal
C
wood
D
plastic
3) How is energy transferred from the Sun to the Earth?
A
through electromagnetic waves
B
through compressional waves
C
through air currents
D
through sound waves
4) A metal spoon was left in a pot of boiling soup. The cook burned a finger by touching the spoon. Why did the finger get burned?
A
The metal spoon conducted heat to the cook's hand
B
The metal spoon conducted electricity to the cook's hand
C
The metal spoon insulated the cook's hand
D
The metal spoon chemically reacted with the cook's hand
5) A car skids along the road and smoke appears to becoming from under the tires. The heat that produces the smoke is caused by
A
sound
B
light
C
friction
D
magnetism
6) How is thermal energy transferred through a material?
A
by the collision of atoms within the material
B
by the collision of crystal within the material
C
by the collision of matter within the material
D
by the collision of light within the material
7) Why do electric cords come with plastic coating wrapped over the wires?
A
Plastic comes in handy when trying to heat up the room through the process of convection
B
Plastic makes the wires look neat and decorative so that they can enhance the design of the buildings they are used in
C
Plastic is an insulator and therefore prevents the wires from shocking you
D
Plastic is therefore a conductor and therefore helps the electricity move more smoothly through the wires
8) A student places a piece of glass over a tank of water. What happens to the speed of a light ray that shines from air through glass into the water?
A
it decreases in the glass, then increases in the water
B
It increases in the class, then decreases in the water
C
It decreases in both the glass and the water
D
It increases in both the glass and the water
9) A piece of bread is stuck in a toaster. Why would it be unsafe to use a metal fork to remove the piece of bread from the toaster?
A
The fork will catch on fire
B
The fork will conduct electricity
C
The fork will damage the toaster
D
The fork will melt in the toaster
10) Which of the following materials would students use to make the light of a circuit glow when connected?
A
Cotton String
B
Plastic straw
C
Rubber Eraser
D
Aluminum foil
*select an answer for all questions
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