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7.2a.KO.Practice.Speed and forces

Total questions: 50

Worksheet time: 25mins

Name
Class
Date
1.

What is the equation for speed?

(a)  

2.

What are the units we normally use for speed?

(a)  

3.

What is displacement?

(a)  

4.

What is a vector

(a)  

5.

What is a scalar

(a)  

6.

What do you call speed in a direction?

(a)  

7.

The total distance ÷ total time?

(a)  

8.

What do we call the speed at one instant of time?

(a)  

9.

What do we call the variable we change in an investigation?

(a)  

10.

What do we call the variable we measure in an investigation?

(a)  

11.

What do we call the variables we keep the same to make an investigation a fair test?

(a)  

12.

Why do we share results/use peer review in science?

(a)  

13.

What is the slope of a graph called

(a)  

14.

What sort of lines on graphs do we use the word constant to describe?

(a)  

15.

What two things might change when something accelerates?

(a)  

16.

What are the normal units we use for acceleration?

(a)  

17.

What do we call a change in velocity

(a)  

18.

What device do we use to measure force?

(a)  

19.

What are the units of force?

(a)  

20.

What have magnetic, electrostatic and gravitation forces all got in common?

(a)  

21.

In a force field what does it mean if the lines are closer?

(a)  

22.

Name four magnetic materials?

(a)  

23.

What does repel mean?

(a)  

24.

What type of electrical charges attract each other?

(a)  

25.

What is another name for the gravitational force?

(a)  

26.

What is the equation relating mass, gravity and weight?

(a)  

27.

What angle to the surface does the normal contact force always act?

(a)  

28.

What do we call the upward force that acts on an aeroplane wing

(a)  

29.

What do we call the upward force that helps things float?

(a)  

30.

What do we call the push force from an engine or shove?

(a)  

31.

Which direction do friction and air resistance always act on an object moving forwards?

(a)  

32.

What type of surfaces have low friction?

(a)  

33.

What happens to air resistance as an object moves faster?

(a)  

34.

What do we call results that do not fit the pattern?

(a)  

35.

What sort of errors cause anomalies?

(a)  

36.

What do we call the single force we can use to show the result of lots of forces acting on an object?

(a)  

37.

How big is the resultant if forces are balanced?

(a)  

38.

What do we call a situation where the forces acting on an object do not cancel each other out?

(a)  

39.

What do we call a situation where the forces acting on an object cancel each other out?

(a)  

40.

If the forces acting on a moving object are balanced, what will happen to its velocity?

(a)  

41.

If the forces acting on a moving object are unbalanced, what will happen to its velocity?

(a)  

42.

What happens to the velocity of an object if the resultant force acting on it is 0N?

(a)  

43.

What happens to the velocity of an object if the resultant force acting on it is 10N?

(a)  

44.

What three things can change when forces are unbalanced?

(a)  

45.

What is the science word describing how much something has stretched?

(a)  

46.

The science word for objects that return to their original shape after being stretched or squashed?

(a)  

47.

The name of the error when a device does not start at 0?

(a)  

48.

The factor that affects both thinking and braking distance?

(a)  

49.

The name of the distance you travel while thinking about stopping (reacting)?

(a)  

50.

According to Newton's 3rd Law every action has an equal and …

(a)