1. If you are burning wood, the reaction
A. release energy
B. absorb energy
C. neither absorb nor release energy.
D. connections release and sometimes
absorb energy depending are the kind
5. A boy was shown the bones of an
animal’s head. He concluded that it was
an animal that eats grass. How did he
A.The animal had a big mouth.
B.The animal had a small mouth
C.The teeth he saw were flat.
D.The teeth he saw were pointed.
6. The uterus is just a size of a fist. How
can it accommodate a full term baby
which weighs more than three kilos?
A. The uterus is elastic.
B. The uterus is rigid.
C. The uterus is rounded
D. The uterus is elongated
1. Some chemicals reactions absorb
energy; while others release energy. Of
the chemical reactions in burning coal
And exploding fireworks, which will
A. Burning coal only.
B. Exploding fireworks only.
C. Both burning coal and exploding fireworks.
D. Neither burning coal nor exploding fireworks.
3. When the nuclei of hydrogen
atoms are forced to combine,
tremendous energy is produced.
What is this process called?
A. Nuclear change
B. Nuclear fusion
C. Nuclear fission
D. Nuclear transformation
5. Why are green plants important to animals?
A. Green plants consume food and give off
B. Green plants consume food and give off
C. Green plants produce food and give off
D. Green plants produce food and give off
7. Why is the land warmer than
the sea during daytime?
A. There is more land than water on earth.
B. There is more water than land on earth.
C. Land absorbs heat faster than water.
D. Water absorbs heat faster than land.
10. After taking a bath, you feel cold on coming out
of the bathroom. Why does this happen?
A. The surrounding air takes up heat from the towel
and the skin.
B. Water vapor in the air condenses on the body
C. Water on the skin evaporates and cools off the
D. Water on the skin evaporates then condenses to
cool off the skin.
2. Respiration involves breathing. You breath
so that you can get oxygen from the air into
your body. Oxygen is used by the body cells
as burning food. As food “burns”, what are
given off as wastes during this process?
Write your answer……..
2. Airplanes drop particles of silver
iodide or dry ice in the atmosphere.
Water vapor sticks to these particles
and forms ice crystals when it is
cold. When they fall to the ground,
they melt into raindrops. What
method is used?