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Worksheets8th grade 4th Qtr Assessment
Total questions: 19
Worksheet time: 38mins
2 students were given identical sets of rocks. Each student grouped the rocks in a different way. Which is the best reason for this?
1 student group the rocks incorrectly
each student grouped the rocks according to different factors
the rocks in 1 set were larger than the rocks in the other set
with so few rocks, it was impossible to form any kind of grouping
how are accurate models for the motions of objects in the solar system developed?
scientists follow a fixed set of steps for developing a solar system model
older data about the solar system are not considered as part of the process
knowledge gained from studying one part of the solar system is applied to another
models of the solar system shoudl fit only the observations that are already known
Early Egyptians thought the solar system was a rectangular box. People in early Greece pictured the universe as a set of cyrstal-like spheres. Later the solar system was viewed as a set of planets orbiting the sun. Why has the model of the solar system changed over the centuries?
scientists preferred newer models
new evidence caused revisions
the newer models were easier to draw
the information was finally put in books
record observations
show qualitative data
present quantitative data
complete calculations
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D
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Organisms can live on Earth because of Earth's location in the solar system. How does Earth's distance from the Sun most affect Earth's water and enable life to exist?
It permits liquid water
it allows water to freeze
it changes water's specific heat
it allows water to be salty or fresh
1 characteristic that is unique to water is that it
has a low specific heat
can be changed from a liquid to a solid
dissolves very few substances
exists naturally in 3 states on Earth
The greenhouse effect is a natural process that warms the Earth's surface. When the Sun's energy reaches the Earth's atmosphere, some of it is reflected back to space and the rest is absorbed and re-radiated by greenhouse gases. A greenhouse is used to model this phenomena. Which of the following cannot be demonstrated by the model?
energy is used to evaporate water
changes in the greenhouse gases
light energy trapped as heat energy
energy that builds up in the greenhouse air
Scientific models are very common. For which purpose below would a physical model be least helpful?
simulating scientific phenomena
simplifying a complex idea
allowing visualization
displaying data
An architect builds a 1/10 model of a house to test the design for sources of heat loss in the winter. Which part of the model would be most important to test with heat sensing equipment?
floors
cielings
windows
staircases
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C
D
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B
C
D
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B
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While looking through the telescope, an astronomer views an object that is moving and appears to have a tail. The astronomer states that the tail is caused by evaporation. What is the astronomer most likely observing?
asteroid
comet
planet
star
The rotation of Earth on its axis is gradually slowing. This change in rotation rate will most likely cause the...
length of days to become longer
phases of the Moon to change quicker
change of the seasons to happen more quickly
length of the orbit around the sun to become shorter
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