Grade 7 Earth Science Exit Ticket: Forces

Forces Exit Ticket

Grade 7 Earth Science Forces Exit Ticket Challenging 50 Questions 24 Views

Classroom Worksheet

Grade 7 Earth Science Exit Ticket: Forces

Forces Exit Ticket

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Score______ / 50

Grade: Grade 7

Subject: Earth Science

Topic: Forces

Time: 20 Minutes

Difficulty: Challenging

Questions: 50

Instructions:
Answer all 50 questions. Show your thinking when needed. Use complete sentences for explanation questions. Read carefully and work from easiest to hardest.

Skills Practiced:

Forces
Earth Science
Critical Thinking
Problem Solving

1Question

What is a force?

2Question

Is gravity a force?

3Question

What force pulls objects toward Earth?

4Question

Name one force that can change an object's motion.

5Question

What do we call a force that acts without touching an object?

6Question

What is friction?

7Question

Which force usually slows moving objects down: friction or gravity?

8Question

What is the unit used to measure force?

9Question

If you push a door, are you applying a contact force or a noncontact force?

10Question

What happens to an object if balanced forces act on it?

11Question

What happens to an object if unbalanced forces act on it?

12Question

A book rests on a desk. Name one force acting on the book.

13Question

Why does a ball thrown upward slow down as it rises?

14Question

What force makes rain fall toward the ground?

15Question

What is the net force if two equal forces act in opposite directions?

16Question

If a 5 N force pushes right and a 2 N force pushes left, what is the net force and direction?

17Question

If a 4 N force pulls north and a 4 N force pulls south, what is the net force?

18Question

What does it mean when forces are balanced?

19Question

What does it mean when forces are unbalanced?

20Question

A sled moves east. Friction acts west. Why is friction important?

21Question

Which force keeps planets in orbit around the Sun?

22Question

Which force holds objects on Earth's surface?

23Question

What is air resistance?

24Question

Why do skydivers eventually stop speeding up and reach a steady speed?

25Question

A hockey puck slides on ice. Why does it keep moving for a while?

26Question

What force makes a magnet attract some metals?

27Question

Is magnetic force a contact or noncontact force?

28Question

What is one way to increase friction?

29Question

What is one way to decrease friction?

30Question

A car speeds up when the driver presses the gas pedal. What is happening to the forces on the car?

31Question

If a rocket launches upward, what two main forces act on it?

32Question

Why do we feel heavier in a fast upward-moving elevator?

33Question

What is the force called that a surface pushes upward on an object resting on it?

34Question

A 10 N force pulls east and a 7 N force pulls east. What is the total force east?

35Question

A 9 N force pulls left and a 6 N force pulls right. What is the net force?

36Question

Why does a ball roll farther on a smooth floor than on carpet?

37Question

How does gravity affect the path of water falling from a waterfall?

38Question

A person pushes a shopping cart with 12 N while friction pushes back with 8 N. What is the net force?

39Question

If the net force on an object is zero, can the object still be moving?

40Question

Why does a moving bicycle eventually stop if no one pedals it?

41Question

Explain why a parachute helps a skydiver land more safely.

42Question

What is the relationship between force and motion?

43Question

A force of 15 N acts upward and a force of 15 N acts downward on an object. Describe the motion if it is already moving sideways.

44Question

Why are astronauts easier to lift on the Moon than on Earth?

45Question

A boulder at the top of a hill begins to roll downhill. What force helps it move downhill?

46Question

How does friction between tectonic plates affect Earth’s surface?

47Question

Why do cliffs and mountains slowly change shape over time because of forces?

48Question

A student says, 'Forces always make objects move.' Is this correct? Explain.

49Question

A 20 N force pushes a box east and a 12 N force pushes west. If friction adds 4 N west, what is the net force?

50Question

Explain how gravity and friction work together when a rock slides down a steep slope.

Answer Key

#	Answer
1	A force is a push or a pull on an object.
2	Yes. Gravity is a force that pulls objects toward each other.
3	Gravity.
4	A push or a pull.
5	A noncontact force.
6	Friction is a force that opposes motion when two surfaces rub against each other.
7	Friction.
8	Newton (N).
9	A contact force.
10	It stays at rest or keeps moving at the same speed in a straight line.
11	Its motion changes.
12	Gravity or the upward support force from the desk.
13	Gravity pulls it downward, opposing its motion.
14	Gravity.
15	Zero newtons.
16	3 N to the right.
17	0 N.
18	The forces are equal in size and opposite in direction, so the net force is zero.
19	The forces do not cancel out, so the net force is not zero.
20	It opposes motion and can slow the sled down.
21	Gravity.
22	Gravity.
23	A force from air that opposes motion through the air.
24	Air resistance increases until it balances the force of gravity.
25	Because there is little friction, so it keeps moving longer.
26	Magnetic force.
27	Noncontact force.
28	Make surfaces rougher or press them together more tightly.
29	Make surfaces smoother or use lubrication.
30	The forces are unbalanced, causing the car to accelerate.
31	Thrust upward and gravity downward.
32	The upward support force increases, so the forces on our bodies feel different.
33	The normal force.
34	17 N east.
35	3 N left.
36	There is less friction on the smooth floor.
37	Gravity pulls the water downward toward Earth.
38	4 N in the direction of the push.
39	Yes. It can keep moving at a constant speed in a straight line.
40	Friction and air resistance slow it down.
41	It increases air resistance, which reduces the skydiver's speed.
42	A force can start, stop, speed up, slow down, or change the direction of motion.
43	The forces are balanced vertically, so it will keep moving sideways at the same speed if no other forces act.
44	The Moon’s gravity is weaker than Earth's gravity.
45	Gravity.
46	It can build up stress and help cause earthquakes when plates suddenly move.
47	Weathering, erosion, gravity, and moving water can break down and move rock.
48	No. Forces can also keep objects at rest, change speed, change direction, or balance each other.
49	4 N east.
50	Gravity pulls the rock downhill, while friction acts uphill and resists the motion.