6th grade Science practice sheet
Texas Essential Knowledge and Skills (TEKS) · from Gradelings · Name: ______________________
Question 1
Brass is copper and zinc mixed evenly throughout a solid. It is a…
- gas
- heterogeneous mixture
- homogeneous mixture
- pure substance because it is a solid metal
homogeneous mixture
Hint: Brass is an alloy: a mixture that looks the same throughout.
Question 2
Group 17 elements, such as fluorine and chlorine, are called the…
- noble gases
- transition metals
- halogens
- alkali metals
halogens
Hint: Halogens are reactive non-metals.
Question 3
A sample of a liquid has a density of 4 g/mL and a mass of 32 g. What is its volume in mL?
answer boxmL
8 mL
Hint: Volume = mass ÷ density.
Question 4
In a chemical reaction, the total mass…
- always decreases
- stays the same
- disappears
- always increases
stays the same
Hint: Atoms are conserved.
Question 5
Is the friction helpful or a problem? Tap an item, then tap its basket.
Sort into: 👍 helpful friction · 👎 friction is a problem
- ⛓️a bike chain wearing out
- 📦a heavy box that's hard to slide
- 🚗tire treads gripping a wet road
- 👟shoe treads gripping the gym floor
- ✏️a pencil leaving marks on paper
- 🚪a stiff, squeaky door hinge
👍 helpful friction: tire treads gripping a wet road, shoe treads gripping the gym floor, a pencil leaving marks on paper · 👎 friction is a problem: a bike chain wearing out, a heavy box that's hard to slide, a stiff, squeaky door hinge
Hint: Friction is helpful when we need grip or need to stop. It's a problem when it wears things out, wastes energy or makes things hard to move.
Question 6
A swimmer pushes off the pool wall. Which force moves the swimmer forward?
🏊- gravity
- the wall pushing back on the swimmer
- the water's friction
- the swimmer pushing on the wall
the wall pushing back on the swimmer
Hint: The swimmer pushes the wall (action), and the wall pushes the swimmer (reaction). Only the force on the swimmer moves the swimmer.
Question 7
Pushing a cart transfers energy to it, so the cart…
- slows down
- gets lighter
- speeds up
- stops
speeds up
Hint: Energy in, motion changes.
Question 8
A ball at the top of a hill starts rolling. Stored energy is changing to…
- magnetic energy
- chemical energy
- motion energy
motion energy
Hint: It speeds up as it goes down.
Question 9
Which is the best example of a limiting factor that is not about food?
- an increase in plant growth
- more insects hatching in spring
- a shortage of nesting sites for cavity-nesting birds
- a long, warm summer with plenty of rain
a shortage of nesting sites for cavity-nesting birds
Hint: Space and shelter limit populations as well as food.
Question 10
A cuckoo bird lays eggs in another bird's nest, and the other bird raises the chick at its own cost. This is closest to…
- mutualism
- parasitism
- commensalism
parasitism
Hint: One benefits and the other is harmed.
Answer key
- 1. homogeneous mixture (Particles & Mixtures)
- 2. halogens (The Periodic Table)
- 3. 8 mL (Density & Buoyancy)
- 4. stays the same (Chemical Reactions)
- 5. 👍 helpful friction: tire treads gripping a wet road, shoe treads gripping the gym floor, a pencil leaving marks on paper · 👎 friction is a problem: a bike chain wearing out, a heavy box that's hard to slide, a stiff, squeaky door hinge (Gravity & Friction)
- 6. the wall pushing back on the swimmer (Newton's Laws)
- 7. speeds up (Kinetic & Potential Energy)
- 8. motion energy (Stored Energy)
- 9. a shortage of nesting sites for cavity-nesting birds (Ecosystems)
- 10. parasitism (Biodiversity)
Want more than 10 questions?
In Gradelings the questions change every time and adjust to your child, with hints and kind feedback. See all science units.