NAT Reviewer

Which of the following objects shows a projectile motion?

• A leaf falling from a tree.

• A coin tossed straight up into the air.

• The rain falling from the sky.

• A fired cannon ball.

During which time did Eratosthenes observe the shadows cast by a vertical stick?

• During a lunar eclipse

• During a solar eclipse

• During noon in a winter solstice

• During noon in a summer solstice

In Galileo’s experiment, what force, aside from friction, affects the motion of the ball in rolling up and down the inclined planes?

• Weight

• Friction

• Gravity

• Inertia

Which of the following ancient Greek philosophers computed for the circumference of the Earth?

• Pythagoras

• Aristotle

• Eratosthenes

• Anaxagoras

Jayden is using high-energy radiation in his experiment. Which of the following are characteristics of the radiation Jayden is studying?

I. short wavelength       III. low frequency

II. long wavelength       IV. high frequency

• I and III

• II and IV

• II and III

• I and IV

How do ants, monkeys, and elephants protect themselves from enemies?

• They change to a color that blends with the surroundings.

• They produce loud cries to scare away their enemies.

• They develop strong legs for running.

• They group themselves

How do ants and termites protect themselves from enemies?

• They live in colonies.

• They hide underground

• They change their colors.

• They have poisonous fangs.

Birds have beaks that are shaped to suit their food getting activities. Which of the birds below eats fish?

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Which bird eats seeds only?

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How are frogs, snakes, and grasshoppers protected from their prey?

• They play dead.

• They blend color with their environment.

• They mimic the shape, smell, and sound of their prey.

• They secrete a poisonous substance.