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Science

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Jessa Garcia
Quiz by Jessa Garcia, updated more than 1 year ago
Jessa Garcia
Created by Jessa Garcia about 7 years ago
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Question 1

Question
Which is true?
Answer
  • Bees die if they sting
  • Bats can pick up radio signal
  • Penguins can fly
  • Owls can move theor eyes in their heads

Question 2

Question
Animals live on land but return to the water to breed.
Answer
  • Mammals
  • Amphibians
  • Reptiles
  • Crustaceans

Question 3

Question
The sun is mostly made up of which gas?
Answer
  • Hydrogen
  • Oxygen
  • Nitrogen
  • Helium

Question 4

Question
On the following metric units which is the smallest
Answer
  • Millimeter
  • Centimeter
  • Nanometer
  • Micron

Question 5

Question
On the following elements which is the most common in the earth's crust?
Answer
  • Aluminum
  • Silicon
  • Iron
  • Calcium

Question 6

Question
Coral are animals that live in
Answer
  • Deep sea vents
  • Warm waters
  • Cold polar waters
  • All of the above

Question 7

Question
A rise in atmoshpheric temperature due to an increase in carbon dioxide, methane and other gases that trap heat in the atmoshpere is called____.
Answer
  • Coriolis Effect
  • Carbon cycle
  • Green house effect
  • El niño phenomenon

Question 8

Question
Suppose that a river has a channel cross section of 25 square meters and a flow speed of 6 meters per second. What is its discharge rate?
Answer
  • 6 m^3/ s
  • 25 m^3/ s
  • 150 m^3/ s
  • 300 m^3/ s

Question 9

Question
Which of the following determines the development of soil in a particular place?
Answer
  • Climate
  • Presence of plant and animal life
  • The type of rock
  • All are factors of soil development

Question 10

Question
The [blank_start]ozone layer[blank_end] is the region of the atmoshpere which absorbs harmful UV radiation.
Answer
  • ozone layer
  • Ionosphere
  • Heteroshpere
  • Thermosphere

Question 11

Question
Troposphere is warmest near the Earth's surface because
Answer
  • Lightning strikes the surface which in turn heats the layer above.
  • The Earth's surface reradiates solar energy which heats the lower troposhere.
  • Radioactive elements in the Earth's crust heat atmosphere abovr the ground.
  • The air is most compressed there by the weight of the atmosphere.

Question 12

Question
Fog is a cloud with its base at or very near the ground. The formation of fog generally occurs after the ground has lost heat by
Answer
  • Convection
  • Transpiration
  • Radiation
  • Evaporation

Question 13

Question
Evaporation is the process by which a liquid changes into gas. In this process, liquid water molecules become
Answer
  • Tiny drops of water
  • Molecules of water vapor
  • Separate atoms of water
  • Atoms of the hydrogen and oxygen

Question 14

Question
Thunderstorm is produce by a cumulonimbus cloud and is always accompanied by lightning and thunder. If you hear a clap of thunder a minute after seeing a flash of lightning, the distance between you and the lightning is about
Answer
  • 5km
  • 10km
  • 20km
  • 45km

Question 15

Question
Plant cells contain most of the same organelles and structures found in animal cells. The only difference is that plant cells have
Answer
  • Vacuoles
  • Plasma membrane
  • Mitochondria
  • A cell wall

Question 16

Question
An example of compound is
Answer
  • Mercury
  • Salt
  • Carbon
  • Oxygen

Question 17

Question
When matter is changed into another matter having different properties, the type of change is known as
Answer
  • Physical change
  • Electrical change
  • Chemical change
  • Atomic change

Question 18

Question
Baking soda produces carbon dioxide when mixed with
Answer
  • Sour milk
  • Flour
  • Water
  • Egg

Question 19

Question
The bubbling of softdrinks is due to
Answer
  • Air dissolved in the liquid
  • Carbon dioxide dissolved in liquid
  • Alcohol in the liquid
  • Sugar in the liquid

Question 20

Question
A gas which bacteria extract from air and change into a form which plant can use is [blank_start]nitrogen[blank_end].
Answer
  • nitrogen
  • oxygen
  • argon
  • CO2

Question 21

Question
Pressure is the pull or push exerted by a weight on a given unit of area. Since air has weight, it exerts pressure on all objects exposed to it. Decreasing air pressure, air can be made to move from a [blank_start]high[blank_end] pressure region to a [blank_start]low[blank_end] pressure region.
Answer
  • high
  • low
  • low
  • another high
  • same

Question 22

Question
Clouds are made up of
Answer
  • water vapor
  • dust particles only
  • tiny droplets of water
  • partially evaporated water

Question 23

Question
winds are caused by
Answer
  • ocean currents
  • the motions of the earth
  • the waving of tree branches
  • the unequal heating of the earth's surface

Question 24

Question
The movement of the wind is always from
Answer
  • north to south
  • east to west
  • low pressure region to high pressure region
  • high pressure region to low pressure region

Question 25

Question
Density of a substance is its mass per unit volume. A piece of brass has a mass of 16.0 g and a volume of 1.9 cm³, Find its density.
Answer
  • 4.2 g/cm ³
  • 8.4 g/cm ³
  • 0.11875 cm ³
  • 12.6 g/cm ³

Question 26

Question
Heat is the total kinetic energy of all the molecules of an object and its measured in Calories or
Answer
  • Newton
  • Joules
  • Centigrade
  • Kelvin

Question 27

Question
The measure of the average kinetic energy of molecules is known as
Answer
  • kinetic energy
  • expansion
  • heat of evaporation
  • temperature

Question 28

Question
Which is true about light?
Answer
  • Light has the property of waves only.
  • Light is produced by excited atoms.
  • Light striking your eyes will not allow you to see.
  • Light energy cannot be measured.

Question 29

Question
The color of all objects depends on the light reflected from that color. Color is related to the frequency and ________.
Answer
  • Doppler Effect
  • Diffraction grating
  • wavelength of light waves
  • primary colors

Question 30

Question
All electric currents are streams of moving electrons. The path followed by an electric current is called _____.
Answer
  • volt
  • conductors
  • potential difference
  • circuit

Question 31

Question
A series of circuit is a single pathway for all electrons in a circuit. A parallel circuit has two or more branches for electrons. If all Christmas lights go out when one bulb is burned out, the lights are connected in _______.
Answer
  • parallel circuit
  • series circuit

Question 32

Question
Acceleration is the rate of change of velocity per unit time. A car accelerates uniformly from 15 kph to 45 kph in 10 seconds. The acceleration is [blank_start]3 km/hr-sec[blank_end] .
Answer
  • 3 kph/second

Question 33

Question
The distance covered by an object that starts from rest and accelerates uniformly depends upon the square of the time elapsed. d = Vi + (1/2) gt² An object starts from rest and falls freely under the force of gravity for 5 seconds. What distance has it fallen during this time?
Answer
  • 49 m
  • 24.5 m
  • 122.5 m
  • 1225 m

Question 34

Question
The acceleration of a body is directly proportional to the net force acting on the body and is inversely proportional to its mass. What force would your arm have to exert to a bowling ball with a mass of 5 kg down an alley with an acceleration of 10 m/sec²?
Answer
  • 5 N
  • 5 kg
  • 50 N
  • 50 kg

Question 35

Question
The product of the mass and the velocity of a body is called its momentum (momentum = mv). A gun having a mass of 5 kg fires a 20 g bullet at a speed of 500 m/sec. Find the recoil velocity of the gun.
Answer
  • 2 m/sec
  • 20 m/sec
  • 0.20 m/sec
  • 200 m/sec

Question 36

Question
Work in a physical science is equal to the force times the displacement in the direction of the force. (W = Force x displacement) A crate is pushed 5 meters on a level floor. The frictional force is determined as 300 N. Calculate the work performed.
Answer
  • 60 N-m
  • 15 N-m
  • 150 N-m
  • 1500 N-m

Question 37

Question
Potential energy or energy of position is the product if the weight if an object and the height to which the object is elevated. A machine weighing 5000 N is raised onto the roof of a building 50 m high, The increase in potential energy is [blank_start]2.5 x 10^5 Joules[blank_end].
Answer
  • 2.5 x 10^5 Joules
  • 2.5 x 10^5 Newton
  • 2.5 x 10^4 Joules
  • 2.5 x 10^4 Newton

Question 38

Question
A rocket with a mass of 1000 kg is fired vertically upward with an initial velocity of 100 m/sec. Calculate its potential energy when it reaches the maximum height.
Answer
  • 5 x 10 ^ 5 Joules
  • 5 x 10 ^ 5 N-m
  • 5 x 10 ^ 6 Joules
  • 5 x 10 ^ 6 N-m

Question 39

Question
A substance that gives up hydrogen ions to water to form hydronium ions is called _____.
Answer
  • water
  • strong acid
  • salt
  • weak acid

Question 40

Question
The radius of a gold atom is 144 picometer. Express this radius in centimeter.
Answer
  • 1.44 x 10 ^ -5 cm
  • 1.44 x 10 ^ -6 cm
  • 1.44 x 10 ^ -7 cm
  • 1.44 x 10 ^ -8 cm

Question 41

Question
It is the property of matter that is independent of its surrounding condition and position.
Answer
  • weight
  • mass
  • density
  • volume

Question 42

Question
An example of a substance that cannot be further decomposed by ordinary chemical means is ______.
Answer
  • air
  • water
  • salt
  • iron

Question 43

Question
A substance that can be further simplified may either be
Answer
  • a mixture or an atom
  • a mixture of a compound
  • an element or a mixture
  • an element or a compound

Question 44

Question
An example of chemical change is the
Answer
  • burning of wood
  • breaking of a glass bottle
  • melting of an ice cube
  • sawing of a piece of wood

Question 45

Question
Chemical reaction may involve all of the following except
Answer
  • separation of the molecules in a mixture
  • breaking down of compounds into elements
  • combination of atoms of elements to form a molecule
  • reaction of a compound and an element to form a new compound and a new element

Question 46

Question
Carbon - 14 has a half-life of approximately [blank_start]5600 years[blank_end]
Answer
  • 5600 years
  • 5600 days
  • 5000 years
  • 600 years

Question 47

Question
Which of the following has 4 significant figures?
Answer
  • 1.68
  • 168.0
  • 0.0168
  • 0.00168

Question 48

Question
An orbital can NEVER be occupied by
Answer
  • 1 electron
  • 2 electrons
  • 3 electrons
  • 0 electron

Question 49

Question
A positively-charged ion has:
Answer
  • more protons than electrons
  • more electrons than protons
  • an equal number of neutrons and electrons
  • an equal number of protons and electrons

Question 50

Question
Sound is a form of energy produced by the vibration of matter. When an object produces sound, the vibration travels through space as
Answer
  • sound energy
  • molecules
  • sound wave
  • radio wave
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