Physical Science 2
What color will a red colored object appear to a human if it is illuminated by a red light?
Red
Which of the following is responsible for passing traits from parents to offspring?
A) Genes
B) Hormones
C) Enzymes
D) Blood
A) Genes
Which of the following statements about sound waves is true? I. Sound is a mechanical wave. II. The speed of sound waves is greater in solids than in liquids. III. The speed of sound wave propagation does not depend on the temperature of the environment.
A) I, II and III
B) II and III
C) Only I
D) I and II
A) I, II and III
Which of the following describes sexual reproduction?
A) Involves the fusion of an egg and a sperm
B) Involves the division of a single parent cell into two identical offspring
C) Involves the production of offspring without the involvement of gametes
D) Involves the production of offspring that are genetically identical to the parent
A) Involves the fusion of an egg and a sperm
Which of the following will occur when an unbalanced force acts on an object?
W) the object will stop
X) the object will lose heat
Y) the object will accelerate
Z) the object will melt
Y) the object will accelerate
The alligator snapping turtle has a wormlike structure on its tongue. When this structure wiggles, fish are attracted to it and swim into the turtle’s mouth. This wormlike appendage is an example of what type of adaptation?
Mimicry
Albert, who has difficulty hearing, is watching a movie. Since he can't hear the sounds very well, Albert asks his son to increase the movie volume even more. What aspect of sound did Albert's son change?
A) Intensity
B) Frequency
C) Tone
D) Speed
A) Intensity
When compared with other fossils, what structure indicates that ancestors of whales used to walk on land?
Vestigial pelvic bones
The sun is a hot ball of gas. It gives off heat and light energy that the Earth absorbs. This heat from the sun is essential for life on Earth. What kind of reactions happening inside the sun create solar energy?
A) nuclear fission
B) nuclear fusion
C) gravitational contraction
D) gradually expanding in size
B) nuclear fusion
A crop of corn plants is genetically modified so that they produce a natural pesticide. People are concerned that these plants might transfer modified genetic material to other plants. Which is the best way to further modify the plants to prevent this?
A. changing the plants so that they do not make pollen
B. changing the plants so that they do not harm insects
C. changing the plants so that they cannot produce nutrients
D. changing the plants so that they cannot be easily identified
A. changing the plants so that they do not make pollen