Worksheets2025 M 1st Semester Science Test
Total questions: 49
Worksheet time: 25mins
Name
Class
Date
1.
The theory of plate tectonics states that:
a)
The Earth’s plates do not move
b)
The Earth’s plates move slowly over the mantle
c)
Volcanoes form ONLY in the middle of continents
d)
Earthquakes only happen underwater
2.
Which type of plate boundary occurs when two plates move away from each other?
a)
Convergent
b)
Transform
c)
Divergent
d)
Subduction
3.
At a convergent boundary, what often forms?
a)
Large plains
b)
Rift valleys
c)
Mountains and volcanoes
4.
Which type of rock forms from cooling and solidification of magma or lava?
a)
Igneous
b)
Sedimentary
c)
Metamorphic
d)
Fossil
5.
True or False: Earthquakes can occur under the ocean as well as on land.
a)
True
b)
False
6.
The diagram below shows a model of the movement of two tectonic plates. When the plates collide, one plate often moves below the other plate. The rising magma that can result from this type of plate movement may produce –
a)
volcanic islands
b)
deep-sea sediment
c)
fossil layers
7.
Which type of rock forms when sediments are pressed and cemented together?
a)
Igneous
b)
Metamorphic
c)
Sedimentary
8.
Why is there a chain of islands like Hawaii in the middle of the Pacific Plate?
a)
The Pacific Plate is breaking apart
b)
A hot spot in the mantle stays in one place while the plate moves over it
c)
Two plates are colliding under the ocean
9.
Which type of rock forms when heat and pressure change existing rocks?
a)
Igneous
b)
Sedimentary
c)
Metamorphic
d)
Fossil
10.
The Ring of Fire is located around which ocean?
a)
Atlantic Ocean
b)
Pacific Ocean
c)
Arctic Ocean
11.
The supercontinent that existed millions of years ago is called:
a)
Eurasia
b)
Pangea
c)
Laurasia
12.
The San Andreas Fault is at a transform boundary between the Pacific Plate and the North American Plate. The fault, which contains crushed and broken rock, extends through most of Southern California and into Northern California. When the plates move suddenly, earthquakes can be felt along the San Andreas Fault.
Complete the sentence:
The San Andreas Fault is the result of the Pacific Plate and the North American Plate ____________ each other.
a)
sliding past
b)
moving away from
c)
moving toward
13.
Most geologists think that the movement of Earth’s plates is caused by _______
a)
subduction
b)
conduction
c)
convection
14.
Minerals are naturally occurring, inorganic, solid substances with:
a)
A crystalline structure
b)
No chemical formula
c)
Only metallic properties
15.
Which process changes igneous rock into sedimentary rock?
a)
Heat and pressure
b)
Melting and cooling
c)
Weathering and erosion
d)
Folding and faulting
16.
What happens when a bath bomb is placed in water?
a)
ONLY a physical change occurs because the bath bomb dissolves.
b)
A chemical change occurs because gas is produced and new substances form.
c)
The water changes state from liquid to solid.
17.
A physical property can be observed with your
a)
eyes
b)
ears
c)
taste
d)
all of the above
18.
You pour oil and water into a cup and notice they do not mix.
This is an example of a:
a)
Physical property
b)
Chemical property
c)
Flammability
19.
Why is a closed system important in experiments?
a)
It lets substances escape
b)
It keeps matter from entering or leaving
c)
It causes chemical changes
20.
Which is a chemical property of matter?
a)
Density
b)
Flammability
c)
Shape
21.
True or False: Mass and Weight are the same thing.
a)
True
b)
False
22.
Which example best represents a closed system?
a)
An open pot of boiling water
b)
A sealed jar of soda
c)
A lake exposed to air
d)
A tree growing in the forest
23.
The Law of Conservation of Mass states:
a)
Energy cannot be created nor destroyed, it can only change form.
b)
Mass cannot be created nor destroyed, it can only change form.
c)
Mass can be created or destroyed, it cannot change form.
24.
During a chemical reaction, the total number of each type of atom:
a)
Increases
b)
Decreases
c)
Remains the same
d)
Doubles
25.
If something floats in water, it is ______ dense than water.
a)
more
b)
less
c)
equally
26.
Which property measures how much matter is in a certain space?
a)
solubility
b)
weight
c)
length
d)
density
27.
Density can be found using the following formula: d=m/v where d is density, m is mass, and v is volume. If a substance has a mass of 12g and a volume of 3 cm³ , what is it's density?
a)
2 g/cm³
b)
4 g/cm³
c)
12 g/cm³
28.
Which statement best describes a physical change in matter?
a)
A change that creates a completely new substance with different properties
b)
A change in the form or appearance of a substance without changing what it is made of
c)
A reaction that produces gas, light, or heat
29.
Which statement best describes a chemical change?
a)
A change that only affects the size or shape of a substance
b)
A change in state, such as melting or freezing
c)
A change that creates one or more new substances with new properties
d)
A change that can always be easily reversed
30.
Physical or Chemical Change? Ice cubes melting in a drink of water.
a)
Physical Change
b)
Chemical Change
31.
Physical or Chemical Change? Shredding paper.
a)
Physical Change
b)
Chemical Change
32.
Physical or Chemical Change? Hydrogen Peroxide and Potassium Iodide mixed together. (ingredients in Elephant toothpaste)
a)
Physical Change
b)
Chemical Change
33.
Physical or Chemical Change? Chopping vegetables.
a)
Physical Change
b)
Chemical Change
34.
Physical or Chemical Change? Toast browning in a toaster.
a)
Physical Change
b)
Chemical Change
35.
Physical or Chemical Change? Fireworks exploding.
a)
Physical Change
b)
Chemical Change
36.
Physical or Chemical Change? A copper-colored penny is heated with zinc and turns silver (and later gold-colored when heated again).
a)
Physical Change
b)
Chemical Change
37.
Physical or Chemical Change? Water boiling and becoming steam/water vapor.
a)
Physical Change
b)
Chemical Change
38.
_____________ are the building blocks of all matter. They are the smallest basic units of matter that still have the properties of an element.
a)
Cells
b)
Compounds
c)
Atoms
39.
___________ are two or more atoms that are chemically bonded together and act as a single unit.
a)
molecules
b)
mixtures
c)
cells
40.
What coefficient should be used, on the product side, to balance this equation? N₂ + O₂ → NO
a)
1
b)
2
c)
4
d)
it is already balanced
41.
How many total atoms are in Al₂O₃?
a)
5
b)
1
c)
2
d)
3
e)
4
42.
How many atoms are in 2H₂O?
a)
6
b)
1
c)
2
d)
3
e)
4
43.
Is this chemical equation balanced?
a)
yes
b)
no
44.
Which statement best explains why this equation is not balanced?
Al + O₂ → Al₂O₃
a)
There are more aluminum atoms on the left (reactant side)
b)
There are more aluminum atoms on the right (product side)
c)
There are more oxygen atoms on the left (reactant side)
d)
There are equal numbers of atoms on both sides
45.
Is the following chemical equation balanced?
Ca + O₂ → CaO
a)
Yes, it is balanced
b)
No, it is not balanced
46.
How many oxygen atoms are in 3CO₂?
a)
2
b)
3
c)
6
d)
9
47.
Carbon has a mass of 12 and oxygen has a mass of 16.
What is the total mass of one molecule of carbon monoxide (CO)?
a)
12
b)
16
c)
28
d)
44
48.
Using the information below, how many total Carbon atoms would be on the reactant side of chemical equation 1.? Use only numbers in your answer.
(a)
49.
Using the information below, what would the total mass of all the hydrogen atoms on the product side of chemical equation 1. be?
a)
24 g
b)
44 g
c)
44.44 g
d)
88.88 g
100 %
