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General Science Review Questions

Multiple Choice
Identify the letter of the choice that best completes the statement or answers the question.
 

 1. 

Which of the following is the following is the best example of competition between birds?
a.
A blue jay eats an insect and is then eaten by a hawk.
c.
A blue jay eats an insect on the ground, and a sparrow eats grass seeds.
b.
A blue jay ignores some insects and finds and eats other insects.
d.
A blue jay steals and eats an insect captured by a robin.
 

 2. 

When students eat a hotdog, they become part of the food chain. What is the original energy source of the food chain that includes the students and the hotdog?
a.
soil
c.
grass
b.
sunlight
d.
pig
 

 3. 

It would be most difficult to coast downhill on a bicycle if which of these parts were missing?
a.
the kickstand
c.
the wheel
b.
the chain
d.
the pedal
 

 4. 

A force that slows or stops the motion of a bicycle is
a.
friction
c.
electricity
b.
heat
d.
magnetism
 

 5. 

The environment of a particular species of rabbit is becoming colder over time.  Which of the following characteristics will best help the rabbit to survive and reproduce?
a.
longer ears
c.
thicker fur
b.
shorter legs
d.
longer whiskers
 

 6. 

Which of these would be the steps water would take as the temperature became hotter?
a.
gas  - liquid - solid
c.
gas - liquid - solid
b.
solid - gas - liquid
d.
solid - liquid - gas
 

 7. 

Stalactites and stalagmites for in cave.  When water drips from the ceiling of the cave it is mixed with minerals.  What happens to the water to build these two cave structures?
a.
water cuts a valley into the cave
c.
water boils the rock away
b.
water evaporates leaving behind the minerals
d.
water changes to rock
 

 8. 

Which of the following organism is a producer?
a.
cricket
c.
trees
b.
worm
d.
mouse
 

 9. 

In which part of the water cycle do you see rain, sleet, hail, and snow?
a.
evaporation
c.
decomposition
b.
run off
d.
precipitation
 

 10. 

Which force keeps the planets in orbit around the Sun?
a.
gravity
c.
flow
b.
resistance
d.
direction
 

 11. 

Looking at the layers of sedimentary rock, you would expect to find the oldest fossils in which of these layers?
a.
top
c.
middle
b.
bottom
d.
side
 

 12. 

How long does it take Earth to make one revolution around the Sun?
a.
1 day
c.
1 month
b.
4 weeks
d.
1 year
 

 13. 

What is the most important reason that temperatures on Earth are warmer near the equator than at the poles?
a.
There is more water at the equator.
c.
Clouds always cover the poles.
b.
The equator gets more direct sunlight.
d.
Forest at the equator block the sun.
 

 14. 

In what direct does wind most likely move?
a.
cold to cold
c.
cold to warm
b.
hot to hot
d.
warm to cold
 

 15. 

The large dark spots on the Moon where made from which of the following?
a.
oceans of water long ago
c.
dead grass and trees
b.
earthquake activity
d.
large areas of dried volcanic lava
 

 16. 

Trees absorb which of the following gases to help them produce food?
a.
carbon dioxide
c.
nitrogen
b.
oxygen
d.
water vapor
 

 17. 

A food chain and a food web are diagrams showing the flow of which of these?
a.
water
c.
gases
b.
energy
d.
heat
 

 18. 

If you were comparing the sizes of the Sun, Earth, and moon from largest to smallest which would be the best answer?
a.
Moon  - Sun - Earth
c.
Sun - Earth - Moon
b.
Earth - Sun - Moon
d.
Sun - Moon - Earth
 

 19. 

Which of these would have the greatest gravitational pull?
a.
Earth
c.
Moon
b.
Sun
d.
Jupiter
 

 20. 

Ocean tides occur how often?
a.
twice daily
c.
every hour
b.
once a month
d.
twice weekly
 



 
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