4th grade · Science · Unit 6 of 10
Energy, Speed & Collisions
Faster things have more energy.
What your child practices
Practices how an object's speed relates to its energy, what happens to energy when objects collide, and devices that change energy from one form to another.
Washington State Learning Standards learning standard: 4-PS3-1; 4-PS3-3; 4-PS3-4 · speed and energy, energy changes in collisions, and devices that convert energy
Sample questions
A taste of this unit. In the app, questions change every time and get easier or harder to match your child.
Question 1
In a collision, objects often…
- turn to water
- grow bigger
- vanish
- change speed or direction
change speed or direction
Hint: Forces act on both.
Question 2
A bowling ball hits the pins. Energy moves to…
- the pins
- the ceiling only
- nowhere
- the moon
the pins
Hint: Energy transfers in a collision.
Question 3
When two cars bump, you hear a sound. The sound shows…
- energy grew
- some energy turned into sound
- energy disappeared
- nothing happened
some energy turned into sound
Hint: Energy changes form.
Question 4
When a moving marble hits a still marble, the still marble…
- stays still always
- melts
- disappears
- starts moving
starts moving
Hint: Energy passes on.
Question 5
A toaster changes electrical energy into…
- light only
- heat
- sound only
- motion only
heat
Hint: It warms bread.
Question 6
In a collision, some energy always changes into…
- gravity
- nothing
- heat and sound
- new matter
heat and sound
Hint: You hear it and it warms slightly.