WorksheetsGR8 Science Milestones Review
Total questions: 44
Worksheet time: 37mins
Pepperoni Pizza is an example of
a homogeneous mixture
a heterogeneous mixture
a pure substance
a compound
This diagram best demonstrates
a compound
a mixture
an elemental compound
an elemental molecule
Which model demonstrates the Law of Cnnservation of Mass/Matter?
Birds sitting on a wire would be like the particle motion of (a) while ants moving through an ant hill would best represent the particle motion of (b)
Most elements on the periodic table are (a) , so most elements on the periodic table are (b) .
Which letter informs us of the number of protons?
A
B
C
D
How many electrons does this element have?
0.066
16
32
32.066
How many neutrons does Chromium have?
24
28
52
76
The area of an atom that is the most dense is the (a)
Look at this section of the periodic table. From left to right it shows some of the metals. metalloids and nonmetals. Which 2 elements would likely have the most similar properties?
Nitrogen (N) and Oxygen (O)
Carbon (C) and Lead (Pb)
Chlorine (Cl) and Argon (Ar)
Tin (Sn) and Lead (Pb)
When energy is added to a system, then a (a) will occur, for example (b) .
When a candle is lit, the burning of the wick is a (a) change while the melting of the wax is a (b) change.
Balance this chemical equation:
(a) Fe + (b) O2 --> (c) Fe3O4
Which list contains ONLY items that use DC for their power source?
TV, Refridgerator, Lamp
Flashlight, Ceiling fan, Freezer
Cell phone, Chromebook, Calculator
Which form of electrical energy comes to your home from a power plant?
AC
BC
DC
EC
Why are electromagnets advantageous? (Pick the best TWO answers)
They are not very strong.
They stay on for a long time.
They can be turned off and on.
They can be made more or less strong.
They use chemicals to attract iron.
Which arrow - a, b or c - correctly identifies heat transfer by radiation?
a
b
c
Which arrow - a, b or c - correctly identifies heat transfer by conduction?
a
b
c
The earth is heated by the sun. The sun transfers heat by (a) and uses (b) waves.
A side by side is stuck in the mud. Three boys each push with 300N of Force, but the side by side won't move! How much work did the boys do?
100J
300J
900J
0J
Students are conducting experiments to determine the identity of three colorless odorless liquids. Their procedure says:
Measure 100ml of each liquid and pour into a beaker.
Use these tests to determine the identity:
Which test should they do to help determine the unknown liquids?
Gently waft to verify that the liquids are odorless.
Take a very small taste each liquid to see if they are bitter or sour.
Measure the Mass of the liquid and divide it by its volume.
Place a small drop on your skin to see if it is caustic.
Which terms correctly identify this lens? (Select ALL correct options)
convex
concave
convergent
divergent
bifocal
What will happen with this type of lens if you are MORE than one focal length away?
the object will appear upside down
the object will disappear
the object will appear blurry
the object will remain right side up.
A motor cycle slows from 10m/s to 4 m/s in 2 seconds. What is the motorcyle's acceleration?
6 m/s2
3 m/s2
-3 m/s2
12 m/s2
Which of these scenarios DO NOT demonstrate acceleration?
A car comes to a stop at a stop sign.
A bus gains speed as it leaves the bus station.
A bicycle rides on a circular track.
A plane travels 600 mph at 33,000 feet of altitude.
A force of 500N is applied to a 1000 kg box. What is the acceleration of the box?
2 m/s2
-2 m/s2
0.5 m/s
50,000J
Light waves bend or refract when they transmit through materials of different densities. Considering waves passing from air into water and glass, the less dense water refracts (a) while the more dense glass refracts (b) .
You have asked to work outside the open classroom door. While sitting around the opening, you can still hear the teacher talking because the sound waves are
absorbing
refracting
diffracting
When you yell "hello!" into a canyon, you hear a series of replies "hello - hello - hello." We call this an echo, but scientifically it is the _____ of sound.
reflection
refraction
diffraction
attraction
Last fall Mrs Rejmer lost her ring in the yard while raking leaves. This spring, she saw something shiniy and found the ring--right where she had dropped it. The ring was in the same place because of Newton's (a) Law.
Students designed a Balloon racer like the one shown here. They hypothesized that the racer would go in the direction opposite the bottle's opening. They thought this because of Newtons ___ law.
first
second
third
lost
Which terms correctly describe only the properties of SOUND waves? (Select all correct answers)
requires a medium
travels faster in water than in air
are longitudinal waves
have crests and troughs
move perpendicular to the direction of energy.
Which type of electromagnetic wave is slightly longer than red light waves?
radio waves
ultra violet waves
infrared waves
orange light waves
The section marked A is the (a) , B is the (b) and C is the (c) .
When a charged rod is placed near a neutral sphere, the sphere is charged by (a) . If the rod comes into direct contact, then the sphere is charged by (b) . Either charge occurs because the (c) are able to move while the (d) must stay in place.
Souns was run through n oscilloscope to create a sine wave. Which wave would represent the LOUDEST sound wave?
the top wave
the bottom wave
they have the same wavelength so they are the same.
Souns was run through n oscilloscope to create a sine wave. Which wave would represent the highest pitched sound wave?
the top wave
the bottom wave
they have the same wavelength so they are the same.
A current through a commutator wire and run between magnets makes a
simple motor
simple generator
simple machine
Mrs Rejmer is not sure if the bulb is broken or if the electrical current is flowing through the wires in her barn. Which of the following items would help her know if the wires had a current flowing through them?
a compass
a wire coil
a battery
an iron core
Sand and salt can be separated by (a) , sand and iron filings can be separated by (b) , and sand with pebbles could be separated by (c) .The are all examples of (d) .
Looking at this graph, which object is moving fastest at 10 seconds?
A
B
C
Looking at this graph, which object is moving slowest between 20 and 40 seconds?
A
B
C
Looking at this graph, what is the average speed of object B?
150 m
2.5 m/s
25 m/s
Which of the following is are indicators that a chemical change has occurred?
When removed from heat, the substance became a solid.
When two liquids are poured together, small particle form and fall to the bottom.
When left in the sun, the liquid disappears.
A white substance and a slear liquid turn blue when stirred together.
When placed in a crucible over flames, the solid become a liquid.
