PRE TEST
Circus Science Quiz
Name:________________________________
1. A circus performer grabs a swinging trapeze bar in her hands and does not
fall to the net. Which force is holding her on the bar?
a)
b)
c)
d)
Friction
Acceleration
Weight
Gyroscopic Stability
2. The Human Cannon Ball is just about to be shot through the air and into
the net. What is at play in the seconds before the flight?
a)
b)
c)
d)
Kinetic Energy
Mitochondria
Potential energy
Acceleration
3. A teeterboard is similar to a see saw in the playground. When the jumper hits the teeterboard what force
makes the act person fly?
a)
b)
c)
d)
Magnetism
Push and pull
Electricity
Metric System
4. A high wire walker is crossing the wire right over a ring of lions. What is the most important thing for the
wire walker to remember?
a)
b)
c)
d)
Lower his center of mass
Walk on his tippy toes
Focus on the lions
The trajectory of the Lepidoptera
5. If an object is in motion the forces are…
a) Balanced
b) Unbalanced
6. What causes an object at rest want to stay at rest?
a) Acceleration
b) Homework
c) Inertia
d) Velocity
7. Speed is…
a) Something that is only moving really fast
b) Change in position over time
c) Inertia related to fluid friction
8. Hand Balancers need lots of friction when balancing on their head or hands.
Friction:
a) Slows down motion.
b) Speeds up motion.
c) Has no effect on motion.
9. The Hand Balancer stands on a pedestal. His mass is 68 kg (150 pounds).
The pedestal is pushing up on the Hand Balancer by how much?
a) 95 kg
b) 0 kg
c) 25 pounds
d) 68 kg
68
kg
9.
.
?
10. Because of gravity, the elephant is
falling onto the teeterboard.
Which arrow shows the direction of the
force that the Ringmaster will go
when the elephant lands on the
teeterboard?
2
a) 1
b) 2
c) 3
d) 4
3
1
4