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WorksheetsScience Quizbee 5
Total questions: 30
Worksheet time: 15mins
Which of the following is a PURE substance?
Gold (Au)
Bronze
Air
Steel
Which scientific concept involves reading the meniscus in a laboratory setting?
Instrument reading
Plate boundaries
Photosynthesis
Chromatography
What is the main difference between physical and chemical change?
Physical change does not alter the substance’s identity, while chemical change does.
Physical change always produces heat, chemical change does not.
Chemical change is reversible, physical change is not.
Physical change only occurs in gases, chemical change in solids.
Which law is used to analyze simple electrical circuits?
Ohm’s law
Newton’s law
Boyle’s law
Charles’s law
If a wave has a frequency (f) and a wavelength (λ), what is the formula for its velocity (v)?
v = fλ
v = f + λ
v = f/λ
v = λ/f
Which organelle is responsible for photosynthesis in plant cells?
Chloroplast
Mitochondria
Nucleus
Ribosome
Why is disaster preparedness important in areas with frequent earthquakes and typhoons?
It helps reduce loss of life and property.
It increases the frequency of disasters.
It prevents all natural disasters.
It is only important for scientists.
The SI unit for FORCE is the ______.
joule (J)
newton (N)
watt (W)
pascal (Pa)
Which instrument measures LIQUID VOLUME accurately?
Beaker
Graduated cylinder
Stopwatch
Meter stick
Which organelle is the site of PHOTOSYNTHESIS?
Mitochondrion
Chloroplast
Nucleus
Ribosome
Sound travels FASTEST in ______.
gases
liquids
solids
plasma
EVAPORATION is the change of state from ______.
liquid to gas
solid to liquid
gas to liquid
solid to gas
Day and night are caused mainly by Earth’s ______.
revolution
tilt
rotation
distance from the Sun
Which source is RENEWABLE?
Coal
Diesel
Solar
Natural gas
A student travels 1.0 km in 200 s. What is the average speed?
3 m/s
4 m/s
5 m/s
6 m/s
A sample has mass 90 g and volume 60 cm³. Its density is ______.
0.6 g/cm³
1.2 g/cm³
1.5 g/cm³
2.0 g/cm³
If 1200 J of work is done in 60 s, the POWER is ______.
15 W
20 W
25 W
30 W
Which mixture is MOST concentrated?
20 g sugar in 50 mL water
15 g sugar in 30 mL water
10 g sugar in 25 mL water
25 g sugar in 125 mL water
To obtain PURE WATER from saltwater, the BEST method is ______.
evaporation
filtration
distillation
magnetism
According to the law of reflection, the angle of incidence is ______ the angle of reflection.
less than
greater than
equal to
unrelated to
A sound wave travels at 300 m/s with frequency 150 Hz. Its wavelength is ______.
0.5 m
1 m
2 m
3 m
Which process RELEASES heat to the surroundings?
condensation
melting
sublimation
evaporation
freezing
Which gas increased by human activity strengthens the greenhouse effect?
O₂
N₂
CO₂
Ar
Convert 66 km/h to m/s (to one decimal place).
17.8 m/s
18.3 m/s
19.5 m/s
20.0 m/s
A rock of mass 132 g raises the water level in a cylinder from 30 mL to 78 mL. What is its density?
2.4 g/mL
2.6 g/mL
2.8 g/mL
3.0 g/mL
An inclined plane 3.6 m long raises a load by 0.45 m. The IDEAL mechanical advantage (IMA) is ______.
6
7
8
9
A cart starts at 4 m/s and accelerates uniformly at 1.5 m/s² for 8 s. The distance traveled is ______.
64 m
72 m
80 m
96 m
For a CONVEX (converging) lens, placing the object inside the focal length forms an image that is ______.
real, inverted, larger
real, inverted, smaller
virtual, upright, larger
virtual, inverted, smaller
A plate moves at 5 cm/year. How far does it move in 3 million years?
15 km
150 km
300 km
500 km
If producers have 12,000 J of energy, about how much is available to TERTIARY consumers (10% rule)?
12 J
120 J
1,200 J
12,000 J
