SCIENCES PRE-ASSESSMENT EXAM
WITH 100% CORRECT ANSWERS
|LATEST UPDATE { GRADED A+}
A mathematical model is used to predict the trajectory of a bullet fired from
a gun.
Which discipline of physical science is used to develop this model? -
✔✔Physics
An environmental scientist monitors pollutants in a lake.
Which two disciplines of physical science does this scientist use?
Choose 2 answers - ✔✔1. Chemistry
,2. Earth science
Which study involves both Earth science and physics? - ✔✔Calculating
how much energy is associated with a hurricane
Which question could be answered with a controlled experiment? -
✔✔Does ice melt faster in an empty glass or in a glass full of water?
Which topic would be appropriate for a controlled experiment? -
✔✔Determining how fast different chemical pollutants dissolve in water
Which question requires a controlled experiment to answer? - ✔✔Which
elements are found in Earth's atmosphere?
Sir Isaac Newton discovered that the force of gravity between two masses
increases if the masses increase, and decreases if the distance between
the masses increases. No experiments have ever contradicted this
relationship.
Which type of scientific statement is this? - ✔✔Law
The well-accepted scientific explanation for many characteristics of Earth's
crust states that the crust is broken into several large plates. These plates
move slowly over the mantle below because of convection and other
processes. Earthquakes and volcanoes are most common at places where
, the plates interact. Evidence from physics, chemistry, and geology supports
this explanation.
Which type of scientific idea is this explanation an example of? -
✔✔Theory
A student proposes that sugar will dissolve faster in rubbing alcohol than in
water. The student reasons that sugar and rubbing alcohol both contain
carbon so they will mix more easily.
Which type of scientific idea is the student's proposal an example of? -
✔✔Hypothesis
Why was the shrinking Earth idea replaced by the theory of plate tectonics?
- ✔✔Plate tectonics explained observations about Earth that the shrinking
Earth idea could not explain.
Astronomers have long accepted that plate tectonics exists nowhere in our
solar system except on Earth. In 2011, a scientist analyzed 100 NASA-
space-mission photographs of Valles Marineris on Mars, the longest known
series of canyons in the solar system. The scientist found that Valles
Marineris showed features found only in locations on Earth where major
tectonic plates divide.