Physics
What type of wave is a sound wave?
A.Transverse
B.Longitudinal
C.Electromagnetic
D.Radio
B.Longitudinal
Which of these is a property of metals?
A. Brittle
B. Good conductor
C. Dull
D. Low melting point
B. Good conductor
What is the basic unit of life in all living things?
A. Tissue
B. Organ
C. Cell
D. Atom
C. Cell
What creates a magnetic field around a wire?
A.Gravity
B.Electricity flowing
C.Heat
D.Light
B.Electricity flowing
How much of the human body is made up of water?
A. About 10%
B. About 25%
C. About 60–70%
D. About 90%
C. About 60–70%
What are two poles of a magnet?
A.East and West
B.North and South
C.Positive and Negative
D.Up and Down
B.North and South
True/False:
Non-metals are usually good conductors of electricity.
False
Which cell organelle is responsible for producing energy?
A. Ribosome
B. Nucleus
C. Mitochondrion
D. Vacuole
C. Mitochondrion
Which of the following best describes the role of microorganisms in the environment?
A. They are always harmful to humans
B. They only live in dirty places
C. They help decompose waste and recycle nutrients
D. They do not interact with other living things
C. They help decompose waste and recycle nutrients
Which part of the plant cell is responsible for photosynthesis?
A. Mitochondria
B. Nucleus
C. Chloroplast
D. Ribosome
C. Chloroplast
Which material is NOT attracted to a magnet?
A.Iron
B.Nickel
C.Wood
D.Steel
C.Wood
Which metal reacts most violently with water?
A. Zinc
B. Iron
C. Sodium
D. Copper
C. Sodium
Which type of organism is made of only one cell?
A. Human
B. Mushroom
C. Bacteria
D. Tree
C. Bacteria
Which of the following is a renewable source of energy?
A.Coal
B.Oil
C.Wind
D.Gasoline
C.Wind
True/False:
A reaction that gives off heat and increases temperature is called endothermic.
False (That's exothermic)
What type of energy is stored in a stretched rubber band?
A.Kinetic energy
B. Chemical energy
C.Thermal energy
D.Elastic potential energy
D.Elastic potential energy
Place these metals in order of reactivity (highest to lowest): Gold, Potassium, Copper
Potassium > Copper > Gold
How are plant cells different from animal cells?
A. Plant cells have a nucleus
B. Animal cells have chloroplasts
C. Plant cells have a cell wall and chloroplasts
D. Animal cells have a cell wall
C. Plant cells have a cell wall and chloroplasts
Which subatomic particles are found in the nucleus?
A. Electrons only
B. Protons and neutrons
C. Neutrons and electrons
D. Protons and electrons
B. Protons and neutrons
Through which medium does sound travel the fastest?
A.Air
B.Water
C.Vacuum
D.Steel
D.Steel
What type of energy does a moving object have?
A.Potential energy
B.Nuclear energy
C.Kinetic energy
D.chemical energy
C.Kinetic energy
Which metal does not react with hydrochloric acid?
A. Zinc
B. Iron
C. Magnesium
D.Copper
D.Copper
Which process describes water turning into vapor from the surface of lakes or oceans?
A. Condensation
B. Precipitation
C. Evaporation
D. Filtration
C. Evaporation
What is the proton number (atomic number) of oxygen?
8
What energy transformation takes place in a battery-powered flashlight?
A.Light-Chemical-Electrical
B.Electrical-Chemical-Light
C.Chemical-Electrical-Light
D.Light-Electrical-Chemical
C.Chemical-Electrical-Light