sience
3. What happens to the particles of a liquid when it is heated?
A. They slow down and move closer together
B. They move faster and spread further apart
C. They stop moving completely
D. They maintain the same speed and distance
6. What is the standard substance used to compare relative
densities?
A. Mercury
B. Water
C. Oil
D. Air
B. Water
5. In a longitudinal wave, what are the compressed regions
called?
A. Crests
B. Troughs
C. Nodes
D. Compressions
D. Compressions
3. What happens to a population when there is a shortage of
resources?
A. The population always increases
B. The population typically decreases
C. The population stays exactly the same
D. The resources automatically increase
B. The population typically decreases
2. In which state of matter do particles have the most kinetic
energy?
A. Solid state
B. Liquid state
C. Gas state
D. All states have equal energy
Gas state
4. When baking soda and vinegar react, the bubbles that form
are:
a. Oxygen gas
b. Carbon dioxide gas
c. Water vapor
d. Hydrogen gas
b. Carbon dioxide gas
7. The shortest day of the year in the Northern Hemisphere is
called:
a. Summer solstice
b. Spring equinox
7. The shortest day of the year in the Northern Hemisphere is
called:
a. Summer solstice
b. Spring equinox
c. Winter solstice
d. Autumn equinox
d. Autumn equinox
c. Winter solstice
20. How do organisms interact with their environment?
A. They don;t affect their environment
20. How do organisms interact with their environment?
A. They don't affect their environment
B. They exchange matter and energy
C. They only take resources
D. They avoid all interact
B. They exchange matter and energy
4. How can you separate a mixture of sand and water?
A. By melting
B. By filtration
C. By evaporation only
D. By magnetic attraction
B.by fileration.
v
5. What is the state of matter of Earth's outer core?
A. Solid
B. Liquid
C. Gas
D. Plasma
B. Liquid
2. Which type of rock forms when magma cools and solidifies?
A. Metamorphic
B. Igneous
C. Sedimentary
D. Composite
B. Igneous
7. Which sphere of Earth includes all rock and soil?
A. Hydrosphere
B. Atmosphere
C. Lithosphere
D. Biosphere
C. Lithosphere
9. What happens to most substances when they change from a
liquid to a gas?
A. They decrease in volume
B. They increase in volume
C. They maintain the same volume
D. They become denser
B. They increase in volume
2. Which of the following is NOT a sign that a chemical reaction
has occurred?
a. Formation of a gas
b. Change in temperature
c. Changing the shape of a substance
d. Production of light
c. Changing the shape of a substance
5. What happens to igneous rocks when they are exposed to
extreme heat and pressure without melting?
A. They become fossil-rich
B. They become metamorphic rocks
C. They dissolve
D. They become sedimentary rocks
B. They become metamorphic rocks
6. Which of these best describes how particles move in a
longitudinal wave?
A. Back and forth parallel to the wave direction
B. Up and down perpendicular to the wave direction
C. In circular motions
D. They don't move at all
A. Back and forth parallel to the wave direction
What is the primary characteristic that distinguishes solids
from liquids and gases?
B. They have a definite shape and volume
3. Which example shows the most kinetic energy?
A. A parked car
B. A sleeping cat
C. A running cheetah
D. A walking turtle
C. A running cheetah
4. In a food web, what do the arrows represent?
A. Direction of energy flow
B. Migration patterns
C. Territory boundaries
D. Reproductive relationships
A. Direction of energy flow
8. What is the hottest layer of Earth?
A. Crust
B. Mantle
C. Outer core
8. What is the hottest layer of Earth?
A. Crust
B. Mantle
C. Outer core
D. Inner core
D. Inner core