If we drop a ball of lead and another one of wool of the same dimensions and at same time from and 100 metre high building, the ball which hits the ground first is:
a) The lead ball
b) The wool ball
c) Both at the same time
c) Both at the same time
What would happen if the earth's atmosphere vanished? The weight of things
a) would decrease
b) would be zero
c) would increase
d) wouldn’t change
d) Wouldn’t change
The study of respiration shows:
a) Green plants and animals always consume oxygen and release CO2 day and night.
b) Green plants only breath at night.
c) Green plants breathe during the day taking carbon dioxide and releasing CO2
a) Green plants and animals always consume oxygen and release CO2 day and night.
If we cut the tail of all mice and their offspring and we did this experiment for a lot of generations,
a) mice would be born without tail
b) the tail of the new generations would be shorter
c) the shape of the tail wouldn’t change
c) the shape of the tail won’t change
Three of the most common states of matter are solids, liquids, and gases. A liquid has:
a) defined volume, but not a defined shape
b) definite shape, but no defined volume
c) definite volume and shape
a) defined volume, but not a defined shape
In a solution of saltwater (a saline solution), salt is the:
a) Solute
b) Solvent
c) Colloid
a) Solute
What is the temperature at which a liquid turns into a gas?
a) Matter point
b) Condensation point
c) Boiling point
c) Boiling point
What is the largest organ of the human body?
a) The skin
b) The liver
c) The brain
a) The skin
The center of a cell enclosed in a membrane is called ...?
a) Ribosome
b) Nucleus
c) Cytoplasm
b) Nucleus
Can frogs live in salt water?
a) Yes
b) No
c) Only in tropical seas
b) No
This vitamin is excreted by humans in urine. What is it?
a) B12
b) C
c) D
b) C
Which famous scientist introduced the idea of natural selection?
a) Charles Darwin
b) Sigmund Freud
c) Thomas Henry Huxley
a) Charles Darwin
How many chambers does a human as well as a dog's heart have?
a) 2
b) 3
c) 4
c) 4
Which bone is the longest bone in the human body?
a) Femur
b) Humerus
c) Tibia
a) Femur
Is an iguana an omnivorous, carnivorous or herbivorous reptile?
a) carnivorous
b) herbivorous
c) omnivorous
b) herbivorous
Which of the following is not a cause of erosion?
a) Gravity
b) Water
c) Wind
d) Plant roots
d) Plant roots
