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Review 2nd Nine Weeks
Test Description: Review
Instructions: Answer all questions to get your test result.
1) Graph C
A
Graph C
B
none of these
C
Graph A
D
Graph B
2) Together the atmosphere and ocean current systems help to regulate Earths overall temperature. The transfer of heat in currents of air and water is called
A
conduction
B
convection
C
absorption
D
radiation
3) A toy car rolls 8 meters in 2 seconds. What is the average speed of the toy car?
A
16 m/s
B
4 m/s
C
10 m/s
D
6 m/s
4) Which statement would most likely explain why students coasting bicycles down a large hill have a greater final speed that those coasting down a small hill.
A
The large hill was taller than the small hill.
B
The large hill had greater mass than the small hill.
C
There was more friction coasting down the large hill.
D
The small hill had a bumpier surface than the small hill.
5) Solar cells convert the suns energy into electricity and can be very expensive. Which would be the most likely result if scientists created a cell that everyone could afford?
A
a reduction in the number of cars
B
a decrease in electricity use
C
a reduction in air pollution
D
a decrease in stormy weather
6) Which of these situations is an example of thermal energy being added to water to change its state of matter?
A
ice crystals forming on a car windshied
B
Puddles of water evaporating during a sunny day.
C
Raindrops falling from the sky
D
Droplets collecting on the outside of a pan filled with cold water
7) Which of the following examples represents the GREATEST amount of potential energy?
A
a helium balloon rising in the air
B
a screen door spring fully stretched
C
water spilling over a waterfall
D
yeast growing in a Petri dish
8) Which of the following energy types is considered very effecient but also produces dangerous waste products?
A
geothermal energy
B
solar energy
C
wind energy
D
nuclear energy
9) A chemical change always results in -
A
a change in size
B
a change in state of matter
C
a precipitate being formed
D
the formation of a new substance
10) Energy from the sun is required for water to evaporate from the oceans. This energy travels through space by-
A
mechanical
B
radiation
C
convection
D
conduction
*select an answer for all questions
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