Science Test

Question 1

1.Measurements of acceleration are given units of?

Answer 1

distance/time2

Question 2

2.How many centimeters are in a kilometer?

Answer 2

100,000

Question 3

3/A rider finishes a 120 km bicycle trip in 3 hours. The average speed of the rider is?

Answer 3

40 km/h 120 divided by 3)

Question 4

4.An object is in motion if it is relative to a?

Answer 4

Reference Point

Question 5

5.The velocity of an object gives both its speed and?

Answer 5

Direction

Question 6

6.You can calculate an average _____ if you know both the total distance and the total time of a trip?

Answer 6

Speed

Question 7

7.Can an object be accelerating if it has a constant speed?

Answer 7

Yes

Question 8

8.The information needed for describing ____ is distance, time, and direction?

Answer 8

Velocity

Question 9

9.An airplane flies 80 km in 10 minutes and then flies 100 km in 20 minutes. What is the average speed of the airplane?

Answer 9

360 km/h

Question 10

10.If you know the ____ of an object, you also know the direction and movement?

Answer 10

velocity

Question 11

11.T orF -An object is in motion only if its distance from a reference point is changing.

Answer 11

True

Question 12

12.A runner starts a 5 km race at 10:15 am and finishes at 10:35 am. Given this information, you can calculate the runner’s?

Answer 12

average speed

Question 13

13.To determine the speed of an object,divide distance by?

Answer 13

time

Question 14

14.Why is it important to know the velocity an object, not just the speed?

Answer 14

direction

Question 15

15.An airplane that moves 50 meters in one second has a speed of?

Answer 15

180,000 m/h (50x60) (3,000x60)

Question 16

16.Speed measurements are given in units of?

Answer 16

distance/time

Question 17

17.A car travels at 25 m/s speeds up to 40 m/s over a period of 15 second. The average acceleration of the car is?

Answer 17

1m/h (40-25=15=15/15)

Question 18

18.What is the advantage of using the International System of Units?

Answer 18

Everyone uses the same numbers

Question 19

19.Even if an object is moving at a constant speed, how can it accelerate? Give 2 examples.

Answer 19

1.) The earth orbiting around the sun. 2.) A tire rotating around its axis. If it’s direction is changing its accelerating.

Question 20

20.You are sitting on a train that is stopped at a station. Use 2 different reference points to explain that the train can appear to be moving and not moving.

Answer 20

The wall or pillar. If the train is moving you want to see the wall. If it wasn’t moving the wall would still be there.